972869999 has 4 divisors (see below), whose sum is σ = 1030097664. Its totient is φ = 915642336.

The previous prime is 972869983. The next prime is 972870007. The reversal of 972869999 is 999968279.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 972869999 - 2⁴ = 972869983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (972869929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28613807 + ... + 28613840.

It is an arithmetic number, because the mean of its divisors is an integer number (257524416).

Almost surely, 2^972869999 is an apocalyptic number.

972869999 is a deficient number, since it is larger than the sum of its proper divisors (57227665).

972869999 is a wasteful number, since it uses less digits than its factorization.

972869999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57227664.

The product of its digits is 39680928, while the sum is 68.

The square root of 972869999 is about 31190.8640309947. The cubic root of 972869999 is about 990.8736290674.

The spelling of 972869999 in words is "nine hundred seventy-two million, eight hundred sixty-nine thousand, nine hundred ninety-nine".