189493444 has 24 divisors (see below), whose sum is σ = 386140608. Its totient is φ = 79678560.

The previous prime is 189493433. The next prime is 189493457. The reversal of 189493444 is 444394981.

It is a super-2 number, since 2×189493444² = 71815530637962272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189493394 and 189493403.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 62362 + ... + 65329.

It is an arithmetic number, because the mean of its divisors is an integer number (16089192).

Almost surely, 2^189493444 is an apocalyptic number.

189493444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189493444 is an abundant number, since it is smaller than the sum of its proper divisors (196647164).

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

189493444 is a wasteful number, since it uses less digits than its factorization.

189493444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127755 (or 127753 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 189493444 is about 13765.6617712335. The cubic root of 189493444 is about 574.3783517277.

The spelling of 189493444 in words is "one hundred eighty-nine million, four hundred ninety-three thousand, four hundred forty-four".