164459 has 8 divisors (see below), whose sum is σ = 174960. Its totient is φ = 154336.

The previous prime is 164449. The next prime is 164471. The reversal of 164459 is 954461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164459 - 2⁴ = 164443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (164419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1484 + ... + 1590.

It is an arithmetic number, because the mean of its divisors is an integer number (21870).

2¹⁶⁴⁴⁵⁹ is an apocalyptic number.

164459 is a deficient number, since it is larger than the sum of its proper divisors (10501).

164459 is a wasteful number, since it uses less digits than its factorization.

164459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189.

The product of its digits is 4320, while the sum is 29.

The square root of 164459 is about 405.5354485122. The cubic root of 164459 is about 54.7880548315.

164459 divided by its sum of digits (29) gives a triangular number (5671 = T₁₀₆).

The spelling of 164459 in words is "one hundred sixty-four thousand, four hundred fifty-nine".