1390775244 has 12 divisors (see below), whose sum is σ = 3245142264. Its totient is φ = 463591744.

The previous prime is 1390775207. The next prime is 1390775249. The reversal of 1390775244 is 4425770931.

1390775244 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1390775196 and 1390775205.

It is not an unprimeable number, because it can be changed into a prime (1390775249) 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, 57948957 + ... + 57948980.

It is an arithmetic number, because the mean of its divisors is an integer number (270428522).

Almost surely, 2^1390775244 is an apocalyptic number.

It is an amenable number.

1390775244 is an abundant number, since it is smaller than the sum of its proper divisors (1854367020).

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

1390775244 is a wasteful number, since it uses less digits than its factorization.

1390775244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115897944 (or 115897942 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 1390775244 is about 37293.0991471613. The cubic root of 1390775244 is about 1116.2264702710.

The spelling of 1390775244 in words is "one billion, three hundred ninety million, seven hundred seventy-five thousand, two hundred forty-four".