169220044 has 12 divisors (see below), whose sum is σ = 338440144. Its totient is φ = 72522864.

The previous prime is 169220027. The next prime is 169220047. The reversal of 169220044 is 440022961.

169220044 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 6043573 = 169220044 / (1 + 6 + 9 + 2 + 2 + 0 + 0 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 169219994 and 169220021.

It is not an unprimeable number, because it can be changed into a prime (169220047) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3021759 + ... + 3021814.

Almost surely, 2^169220044 is an apocalyptic number.

169220044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

169220044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

169220044 is a wasteful number, since it uses less digits than its factorization.

169220044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043584 (or 6043582 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 169220044 is about 13008.4604777045. The cubic root of 169220044 is about 553.1173326695.

It can be divided in two parts, 1692 and 20044, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 169220044 in words is "one hundred sixty-nine million, two hundred twenty thousand, forty-four".