961396971 has 8 divisors (see below), whose sum is σ = 1357266384. Its totient is φ = 603229440.

The previous prime is 961396939. The next prime is 961396991. The reversal of 961396971 is 179693169.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 961396971 - 2⁵ = 961396939 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 18850921 = 961396971 / (9 + 6 + 1 + 3 + 9 + 6 + 9 + 7 + 1).

It is not an unprimeable number, because it can be changed into a prime (961396901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9425410 + ... + 9425511.

It is an arithmetic number, because the mean of its divisors is an integer number (169658298).

Almost surely, 2^961396971 is an apocalyptic number.

961396971 is a deficient number, since it is larger than the sum of its proper divisors (395869413).

961396971 is a wasteful number, since it uses less digits than its factorization.

961396971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18850941.

The product of its digits is 551124, while the sum is 51.

The square root of 961396971 is about 31006.4020969864. The cubic root of 961396971 is about 986.9631015319.

The spelling of 961396971 in words is "nine hundred sixty-one million, three hundred ninety-six thousand, nine hundred seventy-one".