9167312921 has 4 divisors (see below), whose sum is σ = 9872490852. Its totient is φ = 8462134992.

The previous prime is 9167312897. The next prime is 9167312923. The reversal of 9167312921 is 1292137619.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1292137619 = 6637 ⋅194687.

It can be written as a sum of positive squares in 2 ways, for example, as 6266305600 + 2901007321 = 79160^2 + 53861^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9167312921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9167312923) 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, 352588946 + ... + 352588971.

It is an arithmetic number, because the mean of its divisors is an integer number (2468122713).

Almost surely, 2^9167312921 is an apocalyptic number.

It is an amenable number.

9167312921 is a deficient number, since it is larger than the sum of its proper divisors (705177931).

9167312921 is a wasteful number, since it uses less digits than its factorization.

9167312921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705177930.

The product of its digits is 40824, while the sum is 41.

The square root of 9167312921 is about 95746.0856693369. The cubic root of 9167312921 is about 2092.8945737806.

The spelling of 9167312921 in words is "nine billion, one hundred sixty-seven million, three hundred twelve thousand, nine hundred twenty-one".