972699189 has 16 divisors (see below), whose sum is σ = 1616954880. Its totient is φ = 505298160.

The previous prime is 972699181. The next prime is 972699191. The reversal of 972699189 is 981996279.

It is a happy number.

It is not a de Polignac number, because 972699189 - 2³ = 972699181 is a prime.

It is a super-2 number, since 2×972699189² = 1892287424562515442, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972699181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2105179 + ... + 2105640.

It is an arithmetic number, because the mean of its divisors is an integer number (101059680).

Almost surely, 2^972699189 is an apocalyptic number.

It is an amenable number.

972699189 is a deficient number, since it is larger than the sum of its proper divisors (644255691).

972699189 is a wasteful number, since it uses less digits than its factorization.

972699189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210840.

The product of its digits is 4408992, while the sum is 60.

The square root of 972699189 is about 31188.1257692732. The cubic root of 972699189 is about 990.8156353543.

The spelling of 972699189 in words is "nine hundred seventy-two million, six hundred ninety-nine thousand, one hundred eighty-nine".