13906357 has 4 divisors (see below), whose sum is σ = 14724396. Its totient is φ = 13088320.

The previous prime is 13906349. The next prime is 13906393. The reversal of 13906357 is 75360931.

13906357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75360931 = 163 ⋅462337.

It can be written as a sum of positive squares in 2 ways, for example, as 11553201 + 2353156 = 3399^2 + 1534^2 .

It is a cyclic number.

It is not a de Polignac number, because 13906357 - 2³ = 13906349 is a prime.

It is a super-2 number, since 2×13906357² = 386773530022898, 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 (13906327) 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, 408994 + ... + 409027.

It is an arithmetic number, because the mean of its divisors is an integer number (3681099).

Almost surely, 2^13906357 is an apocalyptic number.

13906357 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

13906357 is a deficient number, since it is larger than the sum of its proper divisors (818039).

13906357 is an equidigital number, since it uses as much as digits as its factorization.

13906357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818038.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 13906357 is about 3729.1228191091. The cubic root of 13906357 is about 240.4756596693.

The spelling of 13906357 in words is "thirteen million, nine hundred six thousand, three hundred fifty-seven".