390510490397 has 4 divisors (see below), whose sum is σ = 390519218976. Its totient is φ = 390501761820.

The previous prime is 390510490393. The next prime is 390510490411. The reversal of 390510490397 is 793094015093.

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 a cyclic number.

It is not a de Polignac number, because 390510490397 - 2² = 390510490393 is a prime.

It is a super-2 number, since 2×390510490397² (a number of 24 digits) 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 (390510490393) 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, 4296833 + ... + 4386774.

It is an arithmetic number, because the mean of its divisors is an integer number (97629804744).

Almost surely, 2^390510490397 is an apocalyptic number.

It is an amenable number.

390510490397 is a deficient number, since it is larger than the sum of its proper divisors (8728579).

390510490397 is an equidigital number, since it uses as much as digits as its factorization.

390510490397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8728578.

The product of its (nonzero) digits is 918540, while the sum is 50.

The spelling of 390510490397 in words is "three hundred ninety billion, five hundred ten million, four hundred ninety thousand, three hundred ninety-seven".