164929409 has 8 divisors (see below), whose sum is σ = 171480000. Its totient is φ = 158436432.

The previous prime is 164929399. The next prime is 164929417. The reversal of 164929409 is 904929461.

164929409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 164929409 - 2⁸ = 164929153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 164929409.

It is not an unprimeable number, because it can be changed into a prime (164929459) 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, 8519 + ... + 20060.

It is an arithmetic number, because the mean of its divisors is an integer number (21435000).

Almost surely, 2^164929409 is an apocalyptic number.

It is an amenable number.

164929409 is a deficient number, since it is larger than the sum of its proper divisors (6550591).

164929409 is a wasteful number, since it uses less digits than its factorization.

164929409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28807.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 164929409 is about 12842.4845337653. The cubic root of 164929409 is about 548.4024263125.

The spelling of 164929409 in words is "one hundred sixty-four million, nine hundred twenty-nine thousand, four hundred nine".