164038889 has 4 divisors (see below), whose sum is σ = 187473024. Its totient is φ = 140604756.

The previous prime is 164038873. The next prime is 164038961. The reversal of 164038889 is 988830461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164038889 - 2⁴ = 164038873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164038489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11717057 + ... + 11717070.

It is an arithmetic number, because the mean of its divisors is an integer number (46868256).

Almost surely, 2^164038889 is an apocalyptic number.

It is an amenable number.

164038889 is a deficient number, since it is larger than the sum of its proper divisors (23434135).

164038889 is an equidigital number, since it uses as much as digits as its factorization.

164038889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23434134.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 164038889 is about 12807.7667452214. The cubic root of 164038889 is about 547.4136296829.

The spelling of 164038889 in words is "one hundred sixty-four million, thirty-eight thousand, eight hundred eighty-nine".