390311069 has 16 divisors (see below), whose sum is σ = 404974080. Its totient is φ = 376015920.

The previous prime is 390311063. The next prime is 390311083. The reversal of 390311069 is 960113093.

It is a cyclic number.

It is not a de Polignac number, because 390311069 - 2⁸ = 390310813 is a prime.

It is a super-2 number, since 2×390311069² = 304685461167845522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390311063) 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, 630242 + ... + 630860.

It is an arithmetic number, because the mean of its divisors is an integer number (25310880).

Almost surely, 2^390311069 is an apocalyptic number.

It is an amenable number.

390311069 is a deficient number, since it is larger than the sum of its proper divisors (14663011).

390311069 is a wasteful number, since it uses less digits than its factorization.

390311069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 390311069 is about 19756.2918838531. The cubic root of 390311069 is about 730.8085549101.

The spelling of 390311069 in words is "three hundred ninety million, three hundred eleven thousand, sixty-nine".