13912539 has 16 divisors (see below), whose sum is σ = 19491072. Its totient is φ = 8810208.

The previous prime is 13912531. The next prime is 13912573. The reversal of 13912539 is 93521931.

It is not a de Polignac number, because 13912539 - 2³ = 13912531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13912531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10629 + ... + 11865.

It is an arithmetic number, because the mean of its divisors is an integer number (1218192).

Almost surely, 2^13912539 is an apocalyptic number.

13912539 is a deficient number, since it is larger than the sum of its proper divisors (5578533).

13912539 is a wasteful number, since it uses less digits than its factorization.

13912539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426.

The product of its digits is 7290, while the sum is 33.

The square root of 13912539 is about 3729.9516082652. The cubic root of 13912539 is about 240.5112884658.

The spelling of 13912539 in words is "thirteen million, nine hundred twelve thousand, five hundred thirty-nine".