164809039 has 2 divisors, whose sum is σ = 164809040. Its totient is φ = 164809038.

The previous prime is 164809013. The next prime is 164809061. The reversal of 164809039 is 930908461.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164809039 is a prime.

It is a super-2 number, since 2×164809039² = 54324038672207042, which contains 22 as substring.

It is equal to p_9228883 and since 164809039 and 9228883 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 164808992 and 164809010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164803039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82404519 + 82404520.

It is an arithmetic number, because the mean of its divisors is an integer number (82404520).

Almost surely, 2^164809039 is an apocalyptic number.

164809039 is a deficient number, since it is larger than the sum of its proper divisors (1).

164809039 is an equidigital number, since it uses as much as digits as its factorization.

164809039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 164809039 is about 12837.7972799075. The cubic root of 164809039 is about 548.2689808062.

The spelling of 164809039 in words is "one hundred sixty-four million, eight hundred nine thousand, thirty-nine".