189879359 has 2 divisors, whose sum is σ = 189879360. Its totient is φ = 189879358.

The previous prime is 189879281. The next prime is 189879377. The reversal of 189879359 is 953978981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189879359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189879298 and 189879307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189879659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94939679 + 94939680.

It is an arithmetic number, because the mean of its divisors is an integer number (94939680).

Almost surely, 2^189879359 is an apocalyptic number.

189879359 is a deficient number, since it is larger than the sum of its proper divisors (1).

189879359 is an equidigital number, since it uses as much as digits as its factorization.

189879359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 59.

The square root of 189879359 is about 13779.6719481996. The cubic root of 189879359 is about 574.7680062216.

The spelling of 189879359 in words is "one hundred eighty-nine million, eight hundred seventy-nine thousand, three hundred fifty-nine".