972297917 has 8 divisors (see below), whose sum is σ = 977837280. Its totient is φ = 966767760.

The previous prime is 972297913. The next prime is 972297923. The reversal of 972297917 is 719792279.

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

It is a cyclic number.

It is not a de Polignac number, because 972297917 - 2² = 972297913 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 (972297913) 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, 364334 + ... + 366992.

It is an arithmetic number, because the mean of its divisors is an integer number (122229660).

Almost surely, 2^972297917 is an apocalyptic number.

It is an amenable number.

972297917 is a deficient number, since it is larger than the sum of its proper divisors (5539363).

972297917 is a wasteful number, since it uses less digits than its factorization.

972297917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603.

The product of its digits is 1000188, while the sum is 53.

The square root of 972297917 is about 31181.6920163098. The cubic root of 972297917 is about 990.6793680610.

The spelling of 972297917 in words is "nine hundred seventy-two million, two hundred ninety-seven thousand, nine hundred seventeen".