39944977067 has 12 divisors (see below), whose sum is σ = 40277220984. Its totient is φ = 39615337440.

The previous prime is 39944977043. The next prime is 39944977069. The reversal of 39944977067 is 76077944993.

It is not a de Polignac number, because 39944977067 - 2⁸ = 39944976811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39944976994 and 39944977012.

It is not an unprimeable number, because it can be changed into a prime (39944977069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15169583 + ... + 15172215.

It is an arithmetic number, because the mean of its divisors is an integer number (3356435082).

Almost surely, 2^39944977067 is an apocalyptic number.

39944977067 is a deficient number, since it is larger than the sum of its proper divisors (332243917).

39944977067 is an equidigital number, since it uses as much as digits as its factorization.

39944977067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530 (or 3367 counting only the distinct ones).

The product of its (nonzero) digits is 72013536, while the sum is 65.

The spelling of 39944977067 in words is "thirty-nine billion, nine hundred forty-four million, nine hundred seventy-seven thousand, sixty-seven".