39490913 has 24 divisors (see below), whose sum is σ = 51365664. Its totient is φ = 30004800.

The previous prime is 39490907. The next prime is 39490961. The reversal of 39490913 is 31909493.

It is not a de Polignac number, because 39490913 - 2¹² = 39486817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39490613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21206 + ... + 22992.

It is an arithmetic number, because the mean of its divisors is an integer number (2140236).

Almost surely, 2^39490913 is an apocalyptic number.

It is an amenable number.

39490913 is a deficient number, since it is larger than the sum of its proper divisors (11874751).

39490913 is a wasteful number, since it uses less digits than its factorization.

39490913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 39490913 is about 6284.1795805021. The cubic root of 39490913 is about 340.5381127093.

The spelling of 39490913 in words is "thirty-nine million, four hundred ninety thousand, nine hundred thirteen".