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389468469 = 31331615281
BaseRepresentation
bin10111001101101…
…101000100110101
31000010212001022010
4113031231010311
51244200442334
6102351354433
712436266405
oct2715550465
91003761263
10389468469
1118a932475
12aa522a19
13628c4b20
1439a22805
15242d30e9
hex1736d135

389468469 has 32 divisors (see below), whose sum is σ = 586851328. Its totient is φ = 228096000.

The previous prime is 389468467. The next prime is 389468473. The reversal of 389468469 is 964864983.

It is not a de Polignac number, because 389468469 - 21 = 389468467 is a prime.

It is a super-4 number, since 4×3894684694 (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389468467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71109 + ... + 76389.

It is an arithmetic number, because the mean of its divisors is an integer number (18339104).

Almost surely, 2389468469 is an apocalyptic number.

389468469 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

389468469 is a deficient number, since it is larger than the sum of its proper divisors (197382859).

389468469 is a wasteful number, since it uses less digits than its factorization.

389468469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5389.

The product of its digits is 8957952, while the sum is 57.

The square root of 389468469 is about 19734.9555104642. The cubic root of 389468469 is about 730.2822883990.

The spelling of 389468469 in words is "three hundred eighty-nine million, four hundred sixty-eight thousand, four hundred sixty-nine".

Divisors: 1 3 13 31 39 61 93 183 403 793 1209 1891 2379 5281 5673 15843 24583 68653 73749 163711 205959 322141 491133 966423 2128243 4187833 6384729 9986371 12563499 29959113 129822823 389468469