390372693 has 4 divisors (see below), whose sum is σ = 520496928. Its totient is φ = 260248460.

The previous prime is 390372679. The next prime is 390372707. The reversal of 390372693 is 396273093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (390372679) and next prime (390372707).

It is a cyclic number.

It is not a de Polignac number, because 390372693 - 2¹⁰ = 390371669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390372623) 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, 65062113 + ... + 65062118.

It is an arithmetic number, because the mean of its divisors is an integer number (130124232).

Almost surely, 2^390372693 is an apocalyptic number.

It is an amenable number.

390372693 is a deficient number, since it is larger than the sum of its proper divisors (130124235).

390372693 is a wasteful number, since it uses less digits than its factorization.

390372693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130124234.

The product of its (nonzero) digits is 183708, while the sum is 42.

The square root of 390372693 is about 19757.8514267114. The cubic root of 390372693 is about 730.8470139581.

The spelling of 390372693 in words is "three hundred ninety million, three hundred seventy-two thousand, six hundred ninety-three".