13930357 has 6 divisors (see below), whose sum is σ = 16204758. Its totient is φ = 11940264.

The previous prime is 13930349. The next prime is 13930381. The reversal of 13930357 is 75303931.

It can be written as a sum of positive squares in only one way, i.e., 10278436 + 3651921 = 3206^2 + 1911^2 .

It is not a de Polignac number, because 13930357 - 2³ = 13930349 is a prime.

It is a super-2 number, since 2×13930357² = 388109692294898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13930337) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142098 + ... + 142195.

It is an arithmetic number, because the mean of its divisors is an integer number (2700793).

Almost surely, 2^13930357 is an apocalyptic number.

It is an amenable number.

13930357 is a deficient number, since it is larger than the sum of its proper divisors (2274401).

13930357 is an equidigital number, since it uses as much as digits as its factorization.

13930357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284307 (or 284300 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 13930357 is about 3732.3393468440. The cubic root of 13930357 is about 240.6139201510.

The spelling of 13930357 in words is "thirteen million, nine hundred thirty thousand, three hundred fifty-seven".