1390491704 has 32 divisors (see below), whose sum is σ = 3030134400. Its totient is φ = 585823200.

The previous prime is 1390491677. The next prime is 1390491721. The reversal of 1390491704 is 4071940931.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207122 + ... + 213729.

It is an arithmetic number, because the mean of its divisors is an integer number (94691700).

Almost surely, 2^1390491704 is an apocalyptic number.

1390491704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1390491704 is an abundant number, since it is smaller than the sum of its proper divisors (1639642696).

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

1390491704 is a wasteful number, since it uses less digits than its factorization.

1390491704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420923 (or 420919 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1390491704 is about 37289.2974457819. The cubic root of 1390491704 is about 1116.1506093761.

The spelling of 1390491704 in words is "one billion, three hundred ninety million, four hundred ninety-one thousand, seven hundred four".