390018866079 has 16 divisors (see below), whose sum is σ = 547468016000. Its totient is φ = 246294802656.

The previous prime is 390018866059. The next prime is 390018866087. The reversal of 390018866079 is 970668810093.

It is not a de Polignac number, because 390018866079 - 2⁸ = 390018865823 is a prime.

It is a super-2 number, since 2×390018866079² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390018866059) 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, 22909 + ... + 883494.

It is an arithmetic number, because the mean of its divisors is an integer number (34216751000).

Almost surely, 2^390018866079 is an apocalyptic number.

390018866079 is a deficient number, since it is larger than the sum of its proper divisors (157449149921).

390018866079 is a wasteful number, since it uses less digits than its factorization.

390018866079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913974.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 390018866079 in words is "three hundred ninety billion, eighteen million, eight hundred sixty-six thousand, seventy-nine".