390488793 has 8 divisors (see below), whose sum is σ = 551278368. Its totient is φ = 245012544.

The previous prime is 390488783. The next prime is 390488807. The reversal of 390488793 is 397884093.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 390488793 - 2⁸ = 390488537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 7656643 = 390488793 / (3 + 9 + 0 + 4 + 8 + 8 + 7 + 9 + 3).

It is not an unprimeable number, because it can be changed into a prime (390488723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3828271 + ... + 3828372.

It is an arithmetic number, because the mean of its divisors is an integer number (68909796).

Almost surely, 2^390488793 is an apocalyptic number.

It is an amenable number.

390488793 is a deficient number, since it is larger than the sum of its proper divisors (160789575).

390488793 is a wasteful number, since it uses less digits than its factorization.

390488793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7656663.

The product of its (nonzero) digits is 1306368, while the sum is 51.

The square root of 390488793 is about 19760.7892807954. The cubic root of 390488793 is about 730.9194600499.

The spelling of 390488793 in words is "three hundred ninety million, four hundred eighty-eight thousand, seven hundred ninety-three".