1390338966 has 16 divisors (see below), whose sum is σ = 2799342000. Its totient is φ = 460335648.

The previous prime is 1390338959. The next prime is 1390338979. The reversal of 1390338966 is 6698330931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776701 + ... + 778488.

It is an arithmetic number, because the mean of its divisors is an integer number (174958875).

Almost surely, 2^1390338966 is an apocalyptic number.

1390338966 is an abundant number, since it is smaller than the sum of its proper divisors (1409003034).

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

1390338966 is a wasteful number, since it uses less digits than its factorization.

1390338966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555343.

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 1390338966 is about 37287.2493756244. The cubic root of 1390338966 is about 1116.1097401752.

The spelling of 1390338966 in words is "one billion, three hundred ninety million, three hundred thirty-eight thousand, nine hundred sixty-six".