39668220939 has 8 divisors (see below), whose sum is σ = 53359023312. Its totient is φ = 26211449600.

The previous prime is 39668220931. The next prime is 39668220953. The reversal of 39668220939 is 93902286693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 39668220939 - 2³ = 39668220931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39668220931) 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, 58507362 + ... + 58508039.

It is an arithmetic number, because the mean of its divisors is an integer number (6669877914).

Almost surely, 2^39668220939 is an apocalyptic number.

39668220939 is a deficient number, since it is larger than the sum of its proper divisors (13690802373).

39668220939 is a wasteful number, since it uses less digits than its factorization.

39668220939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117015517.

The product of its (nonzero) digits is 7558272, while the sum is 57.

The spelling of 39668220939 in words is "thirty-nine billion, six hundred sixty-eight million, two hundred twenty thousand, nine hundred thirty-nine".