972399275 has 12 divisors (see below), whose sum is σ = 1206419064. Its totient is φ = 777504000.

The previous prime is 972399251. The next prime is 972399299. The reversal of 972399275 is 572993279.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (972399251) and next prime (972399299).

It is not a de Polignac number, because 972399275 - 2⁸ = 972399019 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42680 + ... + 61370.

It is an arithmetic number, because the mean of its divisors is an integer number (100534922).

Almost surely, 2^972399275 is an apocalyptic number.

972399275 is a deficient number, since it is larger than the sum of its proper divisors (234019789).

972399275 is a wasteful number, since it uses less digits than its factorization.

972399275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20782 (or 20777 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 53.

The square root of 972399275 is about 31183.3172545834. The cubic root of 972399275 is about 990.7137915947.

The spelling of 972399275 in words is "nine hundred seventy-two million, three hundred ninety-nine thousand, two hundred seventy-five".