13897906 has 8 divisors (see below), whose sum is σ = 22742064. Its totient is φ = 6317220.

The previous prime is 13897883. The next prime is 13897913. The reversal of 13897906 is 60979831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 315840 + ... + 315883.

It is an arithmetic number, because the mean of its divisors is an integer number (2842758).

Almost surely, 2^13897906 is an apocalyptic number.

13897906 is a deficient number, since it is larger than the sum of its proper divisors (8844158).

13897906 is a wasteful number, since it uses less digits than its factorization.

13897906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631736.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 13897906 is about 3727.9895386119. The cubic root of 13897906 is about 240.4269368295.

The spelling of 13897906 in words is "thirteen million, eight hundred ninety-seven thousand, nine hundred six".