164044399 has 2 divisors, whose sum is σ = 164044400. Its totient is φ = 164044398.

The previous prime is 164044337. The next prime is 164044411. The reversal of 164044399 is 993440461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164044399 - 2¹⁷ = 163913327 is a prime.

It is a Chen prime.

It is equal to p_9188527 and since 164044399 and 9188527 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164044319) 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 as a sum of consecutive naturals, namely, 82022199 + 82022200.

It is an arithmetic number, because the mean of its divisors is an integer number (82022200).

Almost surely, 2^164044399 is an apocalyptic number.

164044399 is a deficient number, since it is larger than the sum of its proper divisors (1).

164044399 is an equidigital number, since it uses as much as digits as its factorization.

164044399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 164044399 is about 12807.9818472701. The cubic root of 164044399 is about 547.4197587484.

The spelling of 164044399 in words is "one hundred sixty-four million, forty-four thousand, three hundred ninety-nine".