390445499 has 8 divisors (see below), whose sum is σ = 396614400. Its totient is φ = 384322536.

The previous prime is 390445487. The next prime is 390445507. The reversal of 390445499 is 994544093.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390445499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390445439) 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, 5852 + ... + 28550.

It is an arithmetic number, because the mean of its divisors is an integer number (49576800).

Almost surely, 2^390445499 is an apocalyptic number.

390445499 is a deficient number, since it is larger than the sum of its proper divisors (6168901).

390445499 is a wasteful number, since it uses less digits than its factorization.

390445499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22969.

The product of its (nonzero) digits is 699840, while the sum is 47.

The square root of 390445499 is about 19759.6937982348. The cubic root of 390445499 is about 730.8924463881.

The spelling of 390445499 in words is "three hundred ninety million, four hundred forty-five thousand, four hundred ninety-nine".