76971489 has 32 divisors (see below), whose sum is σ = 124032000. Its totient is φ = 41477184.

The previous prime is 76971487. The next prime is 76971491. The reversal of 76971489 is 98417967.

It is an interprime number because it is at equal distance from previous prime (76971487) and next prime (76971491).

It is not a de Polignac number, because 76971489 - 2¹ = 76971487 is a prime.

It is a super-2 number, since 2×76971489² = 11849220237754242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76971487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150967 + ... + 151475.

It is an arithmetic number, because the mean of its divisors is an integer number (3876000).

Almost surely, 2^76971489 is an apocalyptic number.

It is an amenable number.

76971489 is a deficient number, since it is larger than the sum of its proper divisors (47060511).

76971489 is a wasteful number, since it uses less digits than its factorization.

76971489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917.

The product of its digits is 762048, while the sum is 51.

The square root of 76971489 is about 8773.3396719835. The cubic root of 76971489 is about 425.3795713963.

The spelling of 76971489 in words is "seventy-six million, nine hundred seventy-one thousand, four hundred eighty-nine".