189739244 has 24 divisors (see below), whose sum is σ = 370082160. Its totient is φ = 84589056.

The previous prime is 189739241. The next prime is 189739273. The reversal of 189739244 is 442937981.

It is not an unprimeable number, because it can be changed into a prime (189739241) 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, 72137 + ... + 74720.

It is an arithmetic number, because the mean of its divisors is an integer number (15420090).

Almost surely, 2^189739244 is an apocalyptic number.

It is an amenable number.

189739244 is a deficient number, since it is larger than the sum of its proper divisors (180342916).

189739244 is a wasteful number, since it uses less digits than its factorization.

189739244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146897 (or 146895 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 189739244 is about 13774.5868903572. The cubic root of 189739244 is about 574.6265946138.

The spelling of 189739244 in words is "one hundred eighty-nine million, seven hundred thirty-nine thousand, two hundred forty-four".