169979922 has 54 divisors (see below), whose sum is σ = 429396903. Its totient is φ = 48455064.

The previous prime is 169979921. The next prime is 169979981. The reversal of 169979922 is 229979961.

It can be written as a sum of positive squares in only one way, i.e., 84989961 + 84989961 = 9219^2 + 9219^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9219.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (169979921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 386979 + ... + 387417.

Almost surely, 2^169979922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169979922

169979922 is an abundant number, since it is smaller than the sum of its proper divisors (259416981).

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

169979922 is an equidigital number, since it uses as much as digits as its factorization.

169979922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 451 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 169979922 is about 13037.6348315176. The cubic root of 169979922 is about 553.9440159426.

The spelling of 169979922 in words is "one hundred sixty-nine million, nine hundred seventy-nine thousand, nine hundred twenty-two".