39936197213 has 16 divisors (see below), whose sum is σ = 44302593600. Its totient is φ = 35697002880.

The previous prime is 39936197209. The next prime is 39936197219. The reversal of 39936197213 is 31279163993.

It is not a de Polignac number, because 39936197213 - 2² = 39936197209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39936197219) 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, 61295 + ... + 289187.

It is an arithmetic number, because the mean of its divisors is an integer number (2768912100).

Almost surely, 2^39936197213 is an apocalyptic number.

It is an amenable number.

39936197213 is a deficient number, since it is larger than the sum of its proper divisors (4366396387).

39936197213 is a wasteful number, since it uses less digits than its factorization.

39936197213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228172.

The product of its digits is 1653372, while the sum is 53.

The spelling of 39936197213 in words is "thirty-nine billion, nine hundred thirty-six million, one hundred ninety-seven thousand, two hundred thirteen".