390138589 has 4 divisors (see below), whose sum is σ = 390228160. Its totient is φ = 390049020.

The previous prime is 390138569. The next prime is 390138601. The reversal of 390138589 is 985831093.

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 not a de Polignac number, because 390138589 - 2¹⁷ = 390007517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390138569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37899 + ... + 47080.

It is an arithmetic number, because the mean of its divisors is an integer number (97557040).

Almost surely, 2^390138589 is an apocalyptic number.

It is an amenable number.

390138589 is a deficient number, since it is larger than the sum of its proper divisors (89571).

390138589 is an equidigital number, since it uses as much as digits as its factorization.

390138589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89570.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 390138589 is about 19751.9262098662. The cubic root of 390138589 is about 730.7008899889.

The spelling of 390138589 in words is "three hundred ninety million, one hundred thirty-eight thousand, five hundred eighty-nine".