1490397976 has 32 divisors (see below), whose sum is σ = 2922796800. Its totient is φ = 711136800.

The previous prime is 1490397913. The next prime is 1490398009. The reversal of 1490397976 is 6797930941.

It is a super-2 number, since 2×1490397976² = 4442572253729793152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71551 + ... + 90001.

It is an arithmetic number, because the mean of its divisors is an integer number (91337400).

Almost surely, 2^1490397976 is an apocalyptic number.

It is an amenable number.

1490397976 is a deficient number, since it is larger than the sum of its proper divisors (1432398824).

1490397976 is a wasteful number, since it uses less digits than its factorization.

1490397976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18919 (or 18915 counting only the distinct ones).

The product of its (nonzero) digits is 2571912, while the sum is 55.

The square root of 1490397976 is about 38605.6728473938. The cubic root of 1490397976 is about 1142.2664401022.

The spelling of 1490397976 in words is "one billion, four hundred ninety million, three hundred ninety-seven thousand, nine hundred seventy-six".