164172799 has 8 divisors (see below), whose sum is σ = 194096160. Its totient is φ = 135866976.

The previous prime is 164172793. The next prime is 164172817. The reversal of 164172799 is 997271461.

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

It is not a de Polignac number, because 164172799 - 2⁹ = 164172287 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 (164172793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404164 + ... + 404569.

It is an arithmetic number, because the mean of its divisors is an integer number (24262020).

Almost surely, 2^164172799 is an apocalyptic number.

164172799 is a deficient number, since it is larger than the sum of its proper divisors (29923361).

164172799 is an equidigital number, since it uses as much as digits as its factorization.

164172799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808769.

The product of its digits is 190512, while the sum is 46.

The square root of 164172799 is about 12812.9933661108. The cubic root of 164172799 is about 547.5625460401.

The spelling of 164172799 in words is "one hundred sixty-four million, one hundred seventy-two thousand, seven hundred ninety-nine".