169394442 has 16 divisors (see below), whose sum is σ = 387187392. Its totient is φ = 48398400.

The previous prime is 169394441. The next prime is 169394453. The reversal of 169394442 is 244493961.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 4033201 = 169394442 / (1 + 6 + 9 + 3 + 9 + 4 + 4 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 169394394 and 169394403.

It is not an unprimeable number, because it can be changed into a prime (169394441) 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, 2016559 + ... + 2016642.

It is an arithmetic number, because the mean of its divisors is an integer number (24199212).

Almost surely, 2^169394442 is an apocalyptic number.

169394442 is an abundant number, since it is smaller than the sum of its proper divisors (217792950).

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

169394442 is a wasteful number, since it uses less digits than its factorization.

169394442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4033213.

The product of its digits is 186624, while the sum is 42.

The square root of 169394442 is about 13015.1620043701. The cubic root of 169394442 is about 553.3072814786.

The spelling of 169394442 in words is "one hundred sixty-nine million, three hundred ninety-four thousand, four hundred forty-two".