189344844 has 96 divisors (see below), whose sum is σ = 559823040. Its totient is φ = 54825984.

The previous prime is 189344839. The next prime is 189344849. The reversal of 189344844 is 448443981.

It is an interprime number because it is at equal distance from previous prime (189344839) and next prime (189344849).

It is a self number, because there is not a number n which added to its sum of digits gives 189344844.

It is not an unprimeable number, because it can be changed into a prime (189344849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19902 + ... + 27834.

It is an arithmetic number, because the mean of its divisors is an integer number (5831490).

Almost surely, 2^189344844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189344844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279911520).

189344844 is an abundant number, since it is smaller than the sum of its proper divisors (370478196).

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

189344844 is a wasteful number, since it uses less digits than its factorization.

189344844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976 (or 7968 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 189344844 is about 13760.2632242265. The cubic root of 189344844 is about 574.2281707292.

The spelling of 189344844 in words is "one hundred eighty-nine million, three hundred forty-four thousand, eight hundred forty-four".