189350939 has 2 divisors, whose sum is σ = 189350940. Its totient is φ = 189350938.

The previous prime is 189350929. The next prime is 189350951. The reversal of 189350939 is 939053981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189350939 - 2⁸ = 189350683 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 189350893 and 189350902.

It is not a weakly prime, because it can be changed into another prime (189350929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94675469 + 94675470.

It is an arithmetic number, because the mean of its divisors is an integer number (94675470).

Almost surely, 2^189350939 is an apocalyptic number.

189350939 is a deficient number, since it is larger than the sum of its proper divisors (1).

189350939 is an equidigital number, since it uses as much as digits as its factorization.

189350939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 189350939 is about 13760.4846934983. The cubic root of 189350939 is about 574.2343321208.

The spelling of 189350939 in words is "one hundred eighty-nine million, three hundred fifty thousand, nine hundred thirty-nine".