39780890079 has 16 divisors (see below), whose sum is σ = 61612247040. Its totient is φ = 22359281760.

The previous prime is 39780890057. The next prime is 39780890113. The reversal of 39780890079 is 97009808793.

It is a happy number.

It is not a de Polignac number, because 39780890079 - 2⁵ = 39780890047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39780892079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15525999 + ... + 15528560.

It is an arithmetic number, because the mean of its divisors is an integer number (3850765440).

Almost surely, 2^39780890079 is an apocalyptic number.

39780890079 is a deficient number, since it is larger than the sum of its proper divisors (21831356961).

39780890079 is a wasteful number, since it uses less digits than its factorization.

39780890079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31054630.

The product of its (nonzero) digits is 6858432, while the sum is 60.

The spelling of 39780890079 in words is "thirty-nine billion, seven hundred eighty million, eight hundred ninety thousand, seventy-nine".