971399495 has 12 divisors (see below), whose sum is σ = 1281284760. Its totient is φ = 706471920.

The previous prime is 971399449. The next prime is 971399497. The reversal of 971399495 is 594993179.

It is not a de Polignac number, because 971399495 - 2²⁶ = 904290631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 971399495.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971399497) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 802205 + ... + 803414.

It is an arithmetic number, because the mean of its divisors is an integer number (106773730).

Almost surely, 2^971399495 is an apocalyptic number.

971399495 is a deficient number, since it is larger than the sum of its proper divisors (309885265).

971399495 is a wasteful number, since it uses less digits than its factorization.

971399495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605646 (or 1605635 counting only the distinct ones).

The product of its digits is 2755620, while the sum is 56.

The square root of 971399495 is about 31167.2824448972. The cubic root of 971399495 is about 990.3741384241.

The spelling of 971399495 in words is "nine hundred seventy-one million, three hundred ninety-nine thousand, four hundred ninety-five".