390120799 has 4 divisors (see below), whose sum is σ = 390168064. Its totient is φ = 390073536.

The previous prime is 390120791. The next prime is 390120817. The reversal of 390120799 is 997021093.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 997021093 = 4217 ⋅236429.

It is a cyclic number.

It is not a de Polignac number, because 390120799 - 2³ = 390120791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390120791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7647 + ... + 28960.

It is an arithmetic number, because the mean of its divisors is an integer number (97542016).

Almost surely, 2^390120799 is an apocalyptic number.

390120799 is a deficient number, since it is larger than the sum of its proper divisors (47265).

390120799 is a wasteful number, since it uses less digits than its factorization.

390120799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47264.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 390120799 is about 19751.4758689066. The cubic root of 390120799 is about 730.6897833661.

The spelling of 390120799 in words is "three hundred ninety million, one hundred twenty thousand, seven hundred ninety-nine".