7972472491 has 8 divisors (see below), whose sum is σ = 8161567920. Its totient is φ = 7783544832.

The previous prime is 7972472479. The next prime is 7972472503. The reversal of 7972472491 is 1942742797.

It is an interprime number because it is at equal distance from previous prime (7972472479) and next prime (7972472503).

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 7972472491 - 2¹³ = 7972464299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7972472401) 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, 56955 + ... + 138523.

It is an arithmetic number, because the mean of its divisors is an integer number (1020195990).

Almost surely, 2^7972472491 is an apocalyptic number.

7972472491 is a deficient number, since it is larger than the sum of its proper divisors (189095429).

7972472491 is a wasteful number, since it uses less digits than its factorization.

7972472491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83885.

The product of its digits is 1778112, while the sum is 52.

The square root of 7972472491 is about 89288.7030424342. The cubic root of 7972472491 is about 1997.7034047512.

The spelling of 7972472491 in words is "seven billion, nine hundred seventy-two million, four hundred seventy-two thousand, four hundred ninety-one".