39807919934 has 4 divisors (see below), whose sum is σ = 59711879904. Its totient is φ = 19903959966.

The previous prime is 39807919903. The next prime is 39807919951. The reversal of 39807919934 is 43991970893.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9951979982 + ... + 9951979985.

It is an arithmetic number, because the mean of its divisors is an integer number (14927969976).

Almost surely, 2^39807919934 is an apocalyptic number.

39807919934 is a deficient number, since it is larger than the sum of its proper divisors (19903959970).

39807919934 is a wasteful number, since it uses less digits than its factorization.

39807919934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19903959969.

The product of its (nonzero) digits is 13226976, while the sum is 62.

The spelling of 39807919934 in words is "thirty-nine billion, eight hundred seven million, nine hundred nineteen thousand, nine hundred thirty-four".