971927957 has 48 divisors (see below), whose sum is σ = 1381547520. Its totient is φ = 662126400.

The previous prime is 971927933. The next prime is 971927963. The reversal of 971927957 is 759729179.

It is not a de Polignac number, because 971927957 - 2¹⁸ = 971665813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971927917) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245282 + ... + 249212.

It is an arithmetic number, because the mean of its divisors is an integer number (28782240).

Almost surely, 2^971927957 is an apocalyptic number.

It is an amenable number.

971927957 is a deficient number, since it is larger than the sum of its proper divisors (409619563).

971927957 is a wasteful number, since it uses less digits than its factorization.

971927957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994 (or 3981 counting only the distinct ones).

The product of its digits is 2500470, while the sum is 56.

The square root of 971927957 is about 31175.7591246789. The cubic root of 971927957 is about 990.5537007361.

The spelling of 971927957 in words is "nine hundred seventy-one million, nine hundred twenty-seven thousand, nine hundred fifty-seven".