164408839 has 4 divisors (see below), whose sum is σ = 187895824. Its totient is φ = 140921856.

The previous prime is 164408833. The next prime is 164408861. The reversal of 164408839 is 938804461.

164408839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164408839 - 2¹⁷ = 164277767 is a prime.

It is a super-3 number, since 3×164408839³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164408795 and 164408804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164408833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11743482 + ... + 11743495.

It is an arithmetic number, because the mean of its divisors is an integer number (46973956).

Almost surely, 2^164408839 is an apocalyptic number.

164408839 is a deficient number, since it is larger than the sum of its proper divisors (23486985).

164408839 is an equidigital number, since it uses as much as digits as its factorization.

164408839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23486984.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 164408839 is about 12822.2010201057. The cubic root of 164408839 is about 547.8248403462.

The spelling of 164408839 in words is "one hundred sixty-four million, four hundred eight thousand, eight hundred thirty-nine".