189439375 has 20 divisors (see below), whose sum is σ = 241797600. Its totient is φ = 148304000.

The previous prime is 189439373. The next prime is 189439391. The reversal of 189439375 is 573934981.

It is not a de Polignac number, because 189439375 - 2¹ = 189439373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189439373) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26151 + ... + 32599.

It is an arithmetic number, because the mean of its divisors is an integer number (12089880).

Almost surely, 2^189439375 is an apocalyptic number.

189439375 is a deficient number, since it is larger than the sum of its proper divisors (52358225).

189439375 is an frugal number, since it uses more digits than its factorization.

189439375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6516 (or 6501 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 189439375 is about 13763.6977226325. The cubic root of 189439375 is about 574.3237165616.

The spelling of 189439375 in words is "one hundred eighty-nine million, four hundred thirty-nine thousand, three hundred seventy-five".