13857902 has 4 divisors (see below), whose sum is σ = 20786856. Its totient is φ = 6928950.

The previous prime is 13857901. The next prime is 13857947. The reversal of 13857902 is 20975831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20975831 = 941 ⋅22291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13857901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3464474 + ... + 3464477.

It is an arithmetic number, because the mean of its divisors is an integer number (5196714).

Almost surely, 2^13857902 is an apocalyptic number.

13857902 is a deficient number, since it is larger than the sum of its proper divisors (6928954).

13857902 is an equidigital number, since it uses as much as digits as its factorization.

13857902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928953.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 13857902 is about 3722.6203137038. The cubic root of 13857902 is about 240.1960319672.

The spelling of 13857902 in words is "thirteen million, eight hundred fifty-seven thousand, nine hundred two".