13939426 has 32 divisors (see below), whose sum is σ = 23587200. Its totient is φ = 6145920.

The previous prime is 13939411. The next prime is 13939463. The reversal of 13939426 is 62493931.

13939426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35640 + ... + 36028.

It is an arithmetic number, because the mean of its divisors is an integer number (737100).

Almost surely, 2^13939426 is an apocalyptic number.

13939426 is a deficient number, since it is larger than the sum of its proper divisors (9647774).

13939426 is a wasteful number, since it uses less digits than its factorization.

13939426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474.

The product of its digits is 34992, while the sum is 37.

The square root of 13939426 is about 3733.5540708553. The cubic root of 13939426 is about 240.6661239883. Note that the first 3 decimals are identical.

It can be divided in two parts, 13939 and 426, that added together give a triangular number (14365 = T₁₆₉).

The spelling of 13939426 in words is "thirteen million, nine hundred thirty-nine thousand, four hundred twenty-six".