39906879265 has 16 divisors (see below), whose sum is σ = 54043174080. Its totient is φ = 28022384320.

The previous prime is 39906879263. The next prime is 39906879373. The reversal of 39906879265 is 56297860993.

It is not a de Polignac number, because 39906879265 - 2¹ = 39906879263 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39906879197 and 39906879206.

It is not an unprimeable number, because it can be changed into a prime (39906879263) 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, 12508399 + ... + 12511588.

It is an arithmetic number, because the mean of its divisors is an integer number (3377698380).

Almost surely, 2^39906879265 is an apocalyptic number.

It is an amenable number.

39906879265 is a deficient number, since it is larger than the sum of its proper divisors (14136294815).

39906879265 is a wasteful number, since it uses less digits than its factorization.

39906879265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25020032.

The product of its (nonzero) digits is 44089920, while the sum is 64.

The spelling of 39906879265 in words is "thirty-nine billion, nine hundred six million, eight hundred seventy-nine thousand, two hundred sixty-five".