8971591474 has 4 divisors (see below), whose sum is σ = 13457387214. Its totient is φ = 4485795736.

The previous prime is 8971591469. The next prime is 8971591481. The reversal of 8971591474 is 4741951798.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8969415849 + 2175625 = 94707^2 + 1475^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2242897867 + ... + 2242897870.

Almost surely, 2^8971591474 is an apocalyptic number.

8971591474 is a deficient number, since it is larger than the sum of its proper divisors (4485795740).

8971591474 is a wasteful number, since it uses less digits than its factorization.

8971591474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485795739.

The product of its digits is 2540160, while the sum is 55.

The square root of 8971591474 is about 94718.4853869613. The cubic root of 8971591474 is about 2077.8929193689.

The spelling of 8971591474 in words is "eight billion, nine hundred seventy-one million, five hundred ninety-one thousand, four hundred seventy-four".