164222409 has 8 divisors (see below), whose sum is σ = 235806592. Its totient is φ = 101059920.

The previous prime is 164222393. The next prime is 164222449. The reversal of 164222409 is 904222461.

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

It is not a de Polignac number, because 164222409 - 2⁴ = 164222393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164222449) 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, 2105377 + ... + 2105454.

It is an arithmetic number, because the mean of its divisors is an integer number (29475824).

Almost surely, 2^164222409 is an apocalyptic number.

It is an amenable number.

164222409 is a deficient number, since it is larger than the sum of its proper divisors (71584183).

164222409 is a wasteful number, since it uses less digits than its factorization.

164222409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4210847.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 164222409 is about 12814.9291453367. The cubic root of 164222409 is about 547.6176949286.

The spelling of 164222409 in words is "one hundred sixty-four million, two hundred twenty-two thousand, four hundred nine".