164709899 has 2 divisors, whose sum is σ = 164709900. Its totient is φ = 164709898.

The previous prime is 164709869. The next prime is 164709911. The reversal of 164709899 is 998907461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164709899 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164709899.

It is not a weakly prime, because it can be changed into another prime (164709859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82354949 + 82354950.

It is an arithmetic number, because the mean of its divisors is an integer number (82354950).

Almost surely, 2^164709899 is an apocalyptic number.

164709899 is a deficient number, since it is larger than the sum of its proper divisors (1).

164709899 is an equidigital number, since it uses as much as digits as its factorization.

164709899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 164709899 is about 12833.9354447496. The cubic root of 164709899 is about 548.1590226594.

The spelling of 164709899 in words is "one hundred sixty-four million, seven hundred nine thousand, eight hundred ninety-nine".