39492139 has 6 divisors (see below), whose sum is σ = 41952164. Its totient is φ = 37168800.

The previous prime is 39492119. The next prime is 39492151. The reversal of 39492139 is 93129493.

39492139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 39492139 - 2²⁵ = 5937707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39492119) 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 5 ways as a sum of consecutive naturals, for example, 68037 + ... + 68614.

Almost surely, 2^39492139 is an apocalyptic number.

39492139 is a deficient number, since it is larger than the sum of its proper divisors (2460025).

39492139 is a wasteful number, since it uses less digits than its factorization.

39492139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136685 (or 136668 counting only the distinct ones).

The product of its digits is 52488, while the sum is 40.

The square root of 39492139 is about 6284.2771262891. The cubic root of 39492139 is about 340.5416366880.

The spelling of 39492139 in words is "thirty-nine million, four hundred ninety-two thousand, one hundred thirty-nine".