189369939 has 32 divisors (see below), whose sum is σ = 286513920. Its totient is φ = 110246400.

The previous prime is 189369931. The next prime is 189369949. The reversal of 189369939 is 939963981.

189369939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189369939 - 2³ = 189369931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189369931) 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, 89607 + ... + 91695.

It is an arithmetic number, because the mean of its divisors is an integer number (8953560).

Almost surely, 2^189369939 is an apocalyptic number.

189369939 is a deficient number, since it is larger than the sum of its proper divisors (97143981).

189369939 is a wasteful number, since it uses less digits than its factorization.

189369939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211.

The product of its digits is 2834352, while the sum is 57.

The square root of 189369939 is about 13761.1750588385. The cubic root of 189369939 is about 574.2535382352.

The spelling of 189369939 in words is "one hundred eighty-nine million, three hundred sixty-nine thousand, nine hundred thirty-nine".