164430999 has 16 divisors (see below), whose sum is σ = 244073440. Its totient is φ = 109408320.

The previous prime is 164430991. The next prime is 164431009. The reversal of 164430999 is 999034461.

It is not a de Polignac number, because 164430999 - 2³ = 164430991 is a prime.

It is a super-3 number, since 3×164430999³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164430991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8979 + ... + 20235.

It is an arithmetic number, because the mean of its divisors is an integer number (15254590).

Almost surely, 2^164430999 is an apocalyptic number.

164430999 is a deficient number, since it is larger than the sum of its proper divisors (79642441).

164430999 is a wasteful number, since it uses less digits than its factorization.

164430999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11807 (or 11801 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 164430999 is about 12823.0651172019. The cubic root of 164430999 is about 547.8494522692.

The spelling of 164430999 in words is "one hundred sixty-four million, four hundred thirty thousand, nine hundred ninety-nine".