189389699 has 2 divisors, whose sum is σ = 189389700. Its totient is φ = 189389698.

The previous prime is 189389677. The next prime is 189389773. The reversal of 189389699 is 996983981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189389699 is a prime.

It is not a weakly prime, because it can be changed into another prime (189389099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94694849 + 94694850.

It is an arithmetic number, because the mean of its divisors is an integer number (94694850).

Almost surely, 2^189389699 is an apocalyptic number.

189389699 is a deficient number, since it is larger than the sum of its proper divisors (1).

189389699 is an equidigital number, since it uses as much as digits as its factorization.

189389699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7558272, while the sum is 62.

The square root of 189389699 is about 13761.8930020546. The cubic root of 189389699 is about 574.2735112315.

The spelling of 189389699 in words is "one hundred eighty-nine million, three hundred eighty-nine thousand, six hundred ninety-nine".