39520913 has 8 divisors (see below), whose sum is σ = 40527168. Its totient is φ = 38518704.

The previous prime is 39520907. The next prime is 39520919. The reversal of 39520913 is 31902593.

It is an interprime number because it is at equal distance from previous prime (39520907) and next prime (39520919).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39520913 - 2²⁰ = 38472337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 39520913.

It is not an unprimeable number, because it can be changed into a prime (39520919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31331 + ... + 32567.

It is an arithmetic number, because the mean of its divisors is an integer number (5065896).

Almost surely, 2^39520913 is an apocalyptic number.

It is an amenable number.

39520913 is a deficient number, since it is larger than the sum of its proper divisors (1006255).

39520913 is a wasteful number, since it uses less digits than its factorization.

39520913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 39520913 is about 6286.5660737799. The cubic root of 39520913 is about 340.6243229008.

The spelling of 39520913 in words is "thirty-nine million, five hundred twenty thousand, nine hundred thirteen".