39915963 has 8 divisors (see below), whose sum is σ = 59134800. Its totient is φ = 26610624.

The previous prime is 39915961. The next prime is 39915989. The reversal of 39915963 is 36951993.

It is not a de Polignac number, because 39915963 - 2¹ = 39915961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39915961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 739158 + ... + 739211.

It is an arithmetic number, because the mean of its divisors is an integer number (7391850).

Almost surely, 2^39915963 is an apocalyptic number.

39915963 is a deficient number, since it is larger than the sum of its proper divisors (19218837).

39915963 is a wasteful number, since it uses less digits than its factorization.

39915963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478378 (or 1478372 counting only the distinct ones).

The product of its digits is 196830, while the sum is 45.

The square root of 39915963 is about 6317.9081189900. The cubic root of 39915963 is about 341.7555193329.

The spelling of 39915963 in words is "thirty-nine million, nine hundred fifteen thousand, nine hundred sixty-three".