164409899 has 2 divisors, whose sum is σ = 164409900. Its totient is φ = 164409898.

The previous prime is 164409853. The next prime is 164409913. The reversal of 164409899 is 998904461.

It is a happy number.

164409899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164409899 - 2⁸ = 164409643 is a prime.

It is a super-3 number, since 3×164409899³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164409799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82204949 + 82204950.

It is an arithmetic number, because the mean of its divisors is an integer number (82204950).

Almost surely, 2^164409899 is an apocalyptic number.

164409899 is a deficient number, since it is larger than the sum of its proper divisors (1).

164409899 is an equidigital number, since it uses as much as digits as its factorization.

164409899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 164409899 is about 12822.2423545962. The cubic root of 164409899 is about 547.8260176817.

The spelling of 164409899 in words is "one hundred sixty-four million, four hundred nine thousand, eight hundred ninety-nine".