1390338964 has 24 divisors (see below), whose sum is σ = 2870379008. Its totient is φ = 576637920.

The previous prime is 1390338959. The next prime is 1390338979. The reversal of 1390338964 is 4698330931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800019 + ... + 801754.

Almost surely, 2^1390338964 is an apocalyptic number.

1390338964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1390338964 is an abundant number, since it is smaller than the sum of its proper divisors (1480040044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390338964 is a wasteful number, since it uses less digits than its factorization.

1390338964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601815 (or 1601813 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 1390338964 is about 37287.2493488056. The cubic root of 1390338964 is about 1116.1097396401.

The spelling of 1390338964 in words is "one billion, three hundred ninety million, three hundred thirty-eight thousand, nine hundred sixty-four".