1390338968 has 8 divisors (see below), whose sum is σ = 2606885580. Its totient is φ = 695169480.

The previous prime is 1390338959. The next prime is 1390338979. The reversal of 1390338968 is 8698330931.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 86896178 + ... + 86896193.

Almost surely, 2^1390338968 is an apocalyptic number.

It is an amenable number.

1390338968 is a deficient number, since it is larger than the sum of its proper divisors (1216546612).

1390338968 is a wasteful number, since it uses less digits than its factorization.

1390338968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173792377 (or 173792373 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 1390338968 is about 37287.2494024432. The cubic root of 1390338968 is about 1116.1097407104.

The spelling of 1390338968 in words is "one billion, three hundred ninety million, three hundred thirty-eight thousand, nine hundred sixty-eight".