390369009 has 16 divisors (see below), whose sum is σ = 535030272. Its totient is φ = 253064448.

The previous prime is 390368989. The next prime is 390369017. The reversal of 390369009 is 900963093.

It is not a de Polignac number, because 390369009 - 2⁹ = 390368497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390369209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7104 + ... + 28830.

It is an arithmetic number, because the mean of its divisors is an integer number (33439392).

Almost surely, 2^390369009 is an apocalyptic number.

It is an amenable number.

390369009 is a deficient number, since it is larger than the sum of its proper divisors (144661263).

390369009 is a wasteful number, since it uses less digits than its factorization.

390369009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21896.

The product of its (nonzero) digits is 39366, while the sum is 39.

The square root of 390369009 is about 19757.7581977308. The cubic root of 390369009 is about 730.8447149168.

The spelling of 390369009 in words is "three hundred ninety million, three hundred sixty-nine thousand, nine".