972493691 has 8 divisors (see below), whose sum is σ = 1047609024. Its totient is φ = 897422400.

The previous prime is 972493667. The next prime is 972493699. The reversal of 972493691 is 196394279.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-972493691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972493699) 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, 45710 + ... + 63516.

It is an arithmetic number, because the mean of its divisors is an integer number (130951128).

Almost surely, 2^972493691 is an apocalyptic number.

972493691 is a deficient number, since it is larger than the sum of its proper divisors (75115333).

972493691 is a wasteful number, since it uses less digits than its factorization.

972493691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22021.

The product of its digits is 734832, while the sum is 50.

The square root of 972493691 is about 31184.8311042404. The cubic root of 972493691 is about 990.7458553119.

The spelling of 972493691 in words is "nine hundred seventy-two million, four hundred ninety-three thousand, six hundred ninety-one".