1390489205 has 32 divisors (see below), whose sum is σ = 1965731328. Its totient is φ = 924537600.

The previous prime is 1390489189. The next prime is 1390489213. The reversal of 1390489205 is 5029840931.

It is not a de Polignac number, because 1390489205 - 2⁴ = 1390489189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146999 + ... + 156171.

It is an arithmetic number, because the mean of its divisors is an integer number (61429104).

Almost surely, 2^1390489205 is an apocalyptic number.

It is an amenable number.

1390489205 is a deficient number, since it is larger than the sum of its proper divisors (575242123).

1390489205 is an equidigital number, since it uses as much as digits as its factorization.

1390489205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9317.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1390489205 is about 37289.2639374928. The cubic root of 1390489205 is about 1116.1499407248.

The spelling of 1390489205 in words is "one billion, three hundred ninety million, four hundred eighty-nine thousand, two hundred five".