189444442 has 16 divisors (see below), whose sum is σ = 310498272. Its totient is φ = 85972720.

The previous prime is 189444427. The next prime is 189444469. The reversal of 189444442 is 244444981.

It is a happy number.

189444442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 189444395 and 189444404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7773 + ... + 20959.

It is an arithmetic number, because the mean of its divisors is an integer number (19406142).

Almost surely, 2^189444442 is an apocalyptic number.

189444442 is a deficient number, since it is larger than the sum of its proper divisors (121053830).

189444442 is a wasteful number, since it uses less digits than its factorization.

189444442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13853.

The product of its digits is 147456, while the sum is 40.

The square root of 189444442 is about 13763.8817925758. The cubic root of 189444442 is about 574.3288370605.

The spelling of 189444442 in words is "one hundred eighty-nine million, four hundred forty-four thousand, four hundred forty-two".