972893491 has 16 divisors (see below), whose sum is σ = 1050347520. Its totient is φ = 898508160.

The previous prime is 972893489. The next prime is 972893497. The reversal of 972893491 is 194398279.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 972893491 - 2¹ = 972893489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972893497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371595 + ... + 374203.

It is an arithmetic number, because the mean of its divisors is an integer number (65646720).

Almost surely, 2^972893491 is an apocalyptic number.

972893491 is a deficient number, since it is larger than the sum of its proper divisors (77454029).

972893491 is a wasteful number, since it uses less digits than its factorization.

972893491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186.

The product of its digits is 979776, while the sum is 52.

The square root of 972893491 is about 31191.2406133517. The cubic root of 972893491 is about 990.8816045817.

The spelling of 972893491 in words is "nine hundred seventy-two million, eight hundred ninety-three thousand, four hundred ninety-one".