1390508492 has 12 divisors (see below), whose sum is σ = 2440743816. Its totient is φ = 693153120.

The previous prime is 1390508491. The next prime is 1390508527. The reversal of 1390508492 is 2948050931.

It is a super-2 number, since 2×1390508492² = 3867027732648228128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1390508491) 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, 523793 + ... + 526440.

It is an arithmetic number, because the mean of its divisors is an integer number (203395318).

Almost surely, 2^1390508492 is an apocalyptic number.

It is an amenable number.

1390508492 is a deficient number, since it is larger than the sum of its proper divisors (1050235324).

1390508492 is a wasteful number, since it uses less digits than its factorization.

1390508492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1050568 (or 1050566 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1390508492 is about 37289.5225499067. The cubic root of 1390508492 is about 1116.1551012789.

The spelling of 1390508492 in words is "one billion, three hundred ninety million, five hundred eight thousand, four hundred ninety-two".