169441956 has 72 divisors (see below), whose sum is σ = 453747840. Its totient is φ = 55264032.

The previous prime is 169441931. The next prime is 169441963. The reversal of 169441956 is 659144961.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43830 + ... + 47538.

Almost surely, 2^169441956 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169441956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226873920).

169441956 is an abundant number, since it is smaller than the sum of its proper divisors (284305884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169441956 is a wasteful number, since it uses less digits than its factorization.

169441956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3775 (or 3761 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 169441956 is about 13016.9872090281. The cubic root of 169441956 is about 553.3590096309.

The spelling of 169441956 in words is "one hundred sixty-nine million, four hundred forty-one thousand, nine hundred fifty-six".