390204089 has 4 divisors (see below), whose sum is σ = 425677200. Its totient is φ = 354730980.

The previous prime is 390204049. The next prime is 390204103. The reversal of 390204089 is 980402093.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390204089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390204049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17736539 + ... + 17736560.

It is an arithmetic number, because the mean of its divisors is an integer number (106419300).

Almost surely, 2^390204089 is an apocalyptic number.

It is an amenable number.

390204089 is a deficient number, since it is larger than the sum of its proper divisors (35473111).

390204089 is a wasteful number, since it uses less digits than its factorization.

390204089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35473110.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 390204089 is about 19753.5842064168. The cubic root of 390204089 is about 730.7417799286.

The spelling of 390204089 in words is "three hundred ninety million, two hundred four thousand, eighty-nine".