264172209 has 8 divisors (see below), whose sum is σ = 402548160. Its totient is φ = 150955536.

The previous prime is 264172199. The next prime is 264172217. The reversal of 264172209 is 902271462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 264172209 - 2⁷ = 264172081 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 264172209.

It is not an unprimeable number, because it can be changed into a prime (264172109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6289794 + ... + 6289835.

It is an arithmetic number, because the mean of its divisors is an integer number (50318520).

Almost surely, 2^264172209 is an apocalyptic number.

It is an amenable number.

264172209 is a deficient number, since it is larger than the sum of its proper divisors (138375951).

264172209 is a wasteful number, since it uses less digits than its factorization.

264172209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12579639.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 264172209 is about 16253.3753109931. The cubic root of 264172209 is about 641.6463221150.

The spelling of 264172209 in words is "two hundred sixty-four million, one hundred seventy-two thousand, two hundred nine".