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4989471 = 31663157
BaseRepresentation
bin10011000010001000011111
3100101111021020
4103002020133
52234130341
6254535223
760260364
oct23021037
910344236
104989471
1128a8733
121807513
131059066
1493c46b
15688566
hex4c221f

4989471 has 4 divisors (see below), whose sum is σ = 6652632. Its totient is φ = 3326312.

The previous prime is 4989469. The next prime is 4989499. The reversal of 4989471 is 1749894.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4989471 - 21 = 4989469 is a prime.

It is a super-3 number, since 3×49894713 (a number of 21 digits) contains 333 as substring.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831576 + ... + 831581.

It is an arithmetic number, because the mean of its divisors is an integer number (1663158).

Almost surely, 24989471 is an apocalyptic number.

4989471 is a deficient number, since it is larger than the sum of its proper divisors (1663161).

4989471 is a wasteful number, since it uses less digits than its factorization.

4989471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663160.

The product of its digits is 72576, while the sum is 42.

The square root of 4989471 is about 2233.7123807688. The cubic root of 4989471 is about 170.8774814051.

It can be divided in two parts, 4989 and 471, that added together give a triangular number (5460 = T104).

The spelling of 4989471 in words is "four million, nine hundred eighty-nine thousand, four hundred seventy-one".

Divisors: 1 3 1663157 4989471