164429709 has 8 divisors (see below), whose sum is σ = 222833952. Its totient is φ = 107822640.

The previous prime is 164429689. The next prime is 164429791. The reversal of 164429709 is 907924461.

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

It is not a de Polignac number, because 164429709 - 2⁷ = 164429581 is a prime.

It is a super-3 number, since 3×164429709³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164429009) 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, 449079 + ... + 449444.

It is an arithmetic number, because the mean of its divisors is an integer number (27854244).

Almost surely, 2^164429709 is an apocalyptic number.

It is an amenable number.

164429709 is a deficient number, since it is larger than the sum of its proper divisors (58404243).

164429709 is an equidigital number, since it uses as much as digits as its factorization.

164429709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898587.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 164429709 is about 12823.0148171169. The cubic root of 164429709 is about 547.8480195961.

The spelling of 164429709 in words is "one hundred sixty-four million, four hundred twenty-nine thousand, seven hundred nine".