390577985 has 8 divisors (see below), whose sum is σ = 535649856. Its totient is φ = 267824880.

The previous prime is 390577981. The next prime is 390578017. The reversal of 390577985 is 589775093.

It is a happy number.

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

It is not a de Polignac number, because 390577985 - 2² = 390577981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390577981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5579651 + ... + 5579720.

It is an arithmetic number, because the mean of its divisors is an integer number (66956232).

Almost surely, 2^390577985 is an apocalyptic number.

390577985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

390577985 is a deficient number, since it is larger than the sum of its proper divisors (145071871).

390577985 is a wasteful number, since it uses less digits than its factorization.

390577985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11159383.

The product of its (nonzero) digits is 2381400, while the sum is 53.

The square root of 390577985 is about 19763.0459443882. The cubic root of 390577985 is about 730.9751058685.

The spelling of 390577985 in words is "three hundred ninety million, five hundred seventy-seven thousand, nine hundred eighty-five".