1390275056 has 40 divisors (see below), whose sum is σ = 2755470960. Its totient is φ = 679325696.

The previous prime is 1390275023. The next prime is 1390275059. The reversal of 1390275056 is 6505720931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390275059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159056 + ... + 167568.

It is an arithmetic number, because the mean of its divisors is an integer number (68886774).

Almost surely, 2^1390275056 is an apocalyptic number.

1390275056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1390275056 is a deficient number, since it is larger than the sum of its proper divisors (1365195904).

1390275056 is a wasteful number, since it uses less digits than its factorization.

1390275056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8753 (or 8747 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 1390275056 is about 37286.3923704077. The cubic root of 1390275056 is about 1116.0926384304.

Adding to 1390275056 its reverse (6505720931), we get a palindrome (7895995987).

The spelling of 1390275056 in words is "one billion, three hundred ninety million, two hundred seventy-five thousand, fifty-six".