1390947368 has 16 divisors (see below), whose sum is σ = 2644760160. Its totient is φ = 685678000.

The previous prime is 1390947367. The next prime is 1390947419. The reversal of 1390947368 is 8637490931.

It is a super-2 number, since 2×1390947368² = 3869469161092254848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1390947367) 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, 1223858 + ... + 1224993.

It is an arithmetic number, because the mean of its divisors is an integer number (165297510).

Almost surely, 2^1390947368 is an apocalyptic number.

It is an amenable number.

1390947368 is a deficient number, since it is larger than the sum of its proper divisors (1253812792).

1390947368 is a wasteful number, since it uses less digits than its factorization.

1390947368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448928 (or 2448924 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 1390947368 is about 37295.4067949392. The cubic root of 1390947368 is about 1116.2725168771.

The spelling of 1390947368 in words is "one billion, three hundred ninety million, nine hundred forty-seven thousand, three hundred sixty-eight".