921164 has 6 divisors (see below), whose sum is σ = 1612044. Its totient is φ = 460580.

The previous prime is 921157. The next prime is 921169. The reversal of 921164 is 461129.

It is a happy number.

It is a super-2 number, since 2×921164² = 1697086229792, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 921164.

It is not an unprimeable number, because it can be changed into a prime (921169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115142 + ... + 115149.

It is an arithmetic number, because the mean of its divisors is an integer number (268674).

2⁹²¹¹⁶⁴ is an apocalyptic number.

It is an amenable number.

921164 is a deficient number, since it is larger than the sum of its proper divisors (690880).

921164 is a wasteful number, since it uses less digits than its factorization.

921164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230295 (or 230293 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

The square root of 921164 is about 959.7728898026. The cubic root of 921164 is about 97.2998832118.

The spelling of 921164 in words is "nine hundred twenty-one thousand, one hundred sixty-four".