164784979 has 2 divisors, whose sum is σ = 164784980. Its totient is φ = 164784978.

The previous prime is 164784947. The next prime is 164785021. The reversal of 164784979 is 979487461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164784979 - 2⁵ = 164784947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164784379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82392489 + 82392490.

It is an arithmetic number, because the mean of its divisors is an integer number (82392490).

Almost surely, 2^164784979 is an apocalyptic number.

164784979 is a deficient number, since it is larger than the sum of its proper divisors (1).

164784979 is an equidigital number, since it uses as much as digits as its factorization.

164784979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 55.

The square root of 164784979 is about 12836.8601690600. The cubic root of 164784979 is about 548.2422994345.

The spelling of 164784979 in words is "one hundred sixty-four million, seven hundred eighty-four thousand, nine hundred seventy-nine".