390423885817 has 8 divisors (see below), whose sum is σ = 446210276096. Its totient is φ = 334640382912.

The previous prime is 390423885809. The next prime is 390423885853. The reversal of 390423885817 is 718588324093.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 390423885817 - 2³ = 390423885809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390423885877) 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, 423888 + ... + 980065.

It is an arithmetic number, because the mean of its divisors is an integer number (55776284512).

Almost surely, 2^390423885817 is an apocalyptic number.

It is an amenable number.

390423885817 is a deficient number, since it is larger than the sum of its proper divisors (55786390279).

390423885817 is a wasteful number, since it uses less digits than its factorization.

390423885817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443687.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 390423885817 in words is "three hundred ninety billion, four hundred twenty-three million, eight hundred eighty-five thousand, eight hundred seventeen".