164269999 has 2 divisors, whose sum is σ = 164270000. Its totient is φ = 164269998.

The previous prime is 164269981. The next prime is 164270003. The reversal of 164269999 is 999962461.

It is a strong prime.

It is an emirp because it is prime and its reverse (999962461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 164269999 - 2⁷ = 164269871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164269909) 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, 82134999 + 82135000.

It is an arithmetic number, because the mean of its divisors is an integer number (82135000).

Almost surely, 2^164269999 is an apocalyptic number.

164269999 is a deficient number, since it is larger than the sum of its proper divisors (1).

164269999 is an equidigital number, since it uses as much as digits as its factorization.

164269999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1889568, while the sum is 55.

The square root of 164269999 is about 12816.7858295284. The cubic root of 164269999 is about 547.6705878503.

The spelling of 164269999 in words is "one hundred sixty-four million, two hundred sixty-nine thousand, nine hundred ninety-nine".