39880513 has 4 divisors (see below), whose sum is σ = 40051908. Its totient is φ = 39709120.

The previous prime is 39880501. The next prime is 39880517. The reversal of 39880513 is 31508893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4739329 + 35141184 = 2177^2 + 5928^2 .

It is a cyclic number.

It is not a de Polignac number, because 39880513 - 2¹³ = 39872321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39880517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85348 + ... + 85813.

It is an arithmetic number, because the mean of its divisors is an integer number (10012977).

Almost surely, 2^39880513 is an apocalyptic number.

It is an amenable number.

39880513 is a deficient number, since it is larger than the sum of its proper divisors (171395).

39880513 is a wasteful number, since it uses less digits than its factorization.

39880513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171394.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 39880513 is about 6315.1019785907. The cubic root of 39880513 is about 341.6543165342.

The spelling of 39880513 in words is "thirty-nine million, eight hundred eighty thousand, five hundred thirteen".