971489715 has 16 divisors (see below), whose sum is σ = 1776438528. Its totient is φ = 444109536.

The previous prime is 971489699. The next prime is 971489731. The reversal of 971489715 is 517984179.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (971489699) and next prime (971489731).

It is not a de Polignac number, because 971489715 - 2⁴ = 971489699 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4626037 + ... + 4626246.

It is an arithmetic number, because the mean of its divisors is an integer number (111027408).

Almost surely, 2^971489715 is an apocalyptic number.

971489715 is a deficient number, since it is larger than the sum of its proper divisors (804948813).

971489715 is a wasteful number, since it uses less digits than its factorization.

971489715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9252298.

The product of its digits is 635040, while the sum is 51.

The square root of 971489715 is about 31168.7297623756. The cubic root of 971489715 is about 990.4047982399.

The spelling of 971489715 in words is "nine hundred seventy-one million, four hundred eighty-nine thousand, seven hundred fifteen".