13913906 has 4 divisors (see below), whose sum is σ = 20870862. Its totient is φ = 6956952.

The previous prime is 13913899. The next prime is 13913923. The reversal of 13913906 is 60931931.

13913906 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: 60931931 = 1069 ⋅56999.

It can be written as a sum of positive squares in only one way, i.e., 13388281 + 525625 = 3659^2 + 725^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3478475 + ... + 3478478.

Almost surely, 2^13913906 is an apocalyptic number.

13913906 is a deficient number, since it is larger than the sum of its proper divisors (6956956).

13913906 is an equidigital number, since it uses as much as digits as its factorization.

13913906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6956955.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 13913906 is about 3730.1348501093. The cubic root of 13913906 is about 240.5191654887.

The spelling of 13913906 in words is "thirteen million, nine hundred thirteen thousand, nine hundred six".