39630513 has 16 divisors (see below), whose sum is σ = 57347136. Its totient is φ = 24198720.

The previous prime is 39630509. The next prime is 39630533. The reversal of 39630513 is 31503693.

It is not a de Polignac number, because 39630513 - 2² = 39630509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39630533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231 + ... + 8987.

It is an arithmetic number, because the mean of its divisors is an integer number (3584196).

Almost surely, 2^39630513 is an apocalyptic number.

It is an amenable number.

39630513 is a deficient number, since it is larger than the sum of its proper divisors (17716623).

39630513 is a wasteful number, since it uses less digits than its factorization.

39630513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7904.

The product of its (nonzero) digits is 7290, while the sum is 30.

The square root of 39630513 is about 6295.2770391779. The cubic root of 39630513 is about 340.9389071360.

The spelling of 39630513 in words is "thirty-nine million, six hundred thirty thousand, five hundred thirteen".