972274961 has 4 divisors (see below), whose sum is σ = 1111171392. Its totient is φ = 833378532.

The previous prime is 972274949. The next prime is 972274981. The reversal of 972274961 is 169472279.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 972274961 - 2¹⁸ = 972012817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (972274981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69448205 + ... + 69448218.

It is an arithmetic number, because the mean of its divisors is an integer number (277792848).

Almost surely, 2^972274961 is an apocalyptic number.

It is an amenable number.

972274961 is a deficient number, since it is larger than the sum of its proper divisors (138896431).

972274961 is a wasteful number, since it uses less digits than its factorization.

972274961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138896430.

The product of its digits is 381024, while the sum is 47.

The square root of 972274961 is about 31181.3239135223. The cubic root of 972274961 is about 990.6715713373.

The spelling of 972274961 in words is "nine hundred seventy-two million, two hundred seventy-four thousand, nine hundred sixty-one".