390356990 has 8 divisors (see below), whose sum is σ = 702642600. Its totient is φ = 156142792.

The previous prime is 390356983. The next prime is 390357001. The reversal of 390356990 is 99653093.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19517840 + ... + 19517859.

It is an arithmetic number, because the mean of its divisors is an integer number (87830325).

Almost surely, 2^390356990 is an apocalyptic number.

390356990 is a deficient number, since it is larger than the sum of its proper divisors (312285610).

390356990 is a wasteful number, since it uses less digits than its factorization.

390356990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39035706.

The product of its (nonzero) digits is 196830, while the sum is 44.

The square root of 390356990 is about 19757.4540363884. The cubic root of 390356990 is about 730.8372142251.

The spelling of 390356990 in words is "three hundred ninety million, three hundred fifty-six thousand, nine hundred ninety".