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1379469 = 371331163
BaseRepresentation
bin101010000110010001101
32121002021110
411100302031
5323120334
645322233
714503530
oct5206215
92532243
101379469
11862463
12566379
13393b70
1427ca17
151c3ae9
hex150c8d

1379469 has 32 divisors (see below), whose sum is σ = 2351104. Its totient is φ = 699840.

The previous prime is 1379467. The next prime is 1379473. The reversal of 1379469 is 9649731.

It is not a de Polignac number, because 1379469 - 21 = 1379467 is a prime.

It is a super-2 number, since 2×13794692 = 3805869443922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a d-powerful number, because it can be written as 1 + 35 + 77 + 92 + 47 + 65 + 96 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379461) 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, 8382 + ... + 8544.

It is an arithmetic number, because the mean of its divisors is an integer number (73472).

21379469 is an apocalyptic number.

It is an amenable number.

1379469 is a deficient number, since it is larger than the sum of its proper divisors (971635).

1379469 is a wasteful number, since it uses less digits than its factorization.

1379469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217.

The product of its digits is 40824, while the sum is 39.

The square root of 1379469 is about 1174.5079820929. The cubic root of 1379469 is about 111.3193465722.

The spelling of 1379469 in words is "one million, three hundred seventy-nine thousand, four hundred sixty-nine".

Divisors: 1 3 7 13 21 31 39 91 93 163 217 273 403 489 651 1141 1209 2119 2821 3423 5053 6357 8463 14833 15159 35371 44499 65689 106113 197067 459823 1379469