204166969 has 4 divisors (see below), whose sum is σ = 206626896. Its totient is φ = 201707044.

The previous prime is 204166933. The next prime is 204166987. The reversal of 204166969 is 969661402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204166969 - 2⁷ = 204166841 is a prime.

It is a super-2 number, since 2×204166969² = 83368302461293922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204166769) 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, 1229839 + ... + 1230004.

It is an arithmetic number, because the mean of its divisors is an integer number (51656724).

Almost surely, 2^204166969 is an apocalyptic number.

It is an amenable number.

204166969 is a deficient number, since it is larger than the sum of its proper divisors (2459927).

204166969 is an equidigital number, since it uses as much as digits as its factorization.

204166969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459926.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 204166969 is about 14288.7007456941. The cubic root of 204166969 is about 588.8370936619.

The spelling of 204166969 in words is "two hundred four million, one hundred sixty-six thousand, nine hundred sixty-nine".