189212699 has 8 divisors (see below), whose sum is σ = 204078000. Its totient is φ = 174391776.

The previous prime is 189212689. The next prime is 189212707. The reversal of 189212699 is 996212981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-189212699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189212609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1949 + ... + 19550.

It is an arithmetic number, because the mean of its divisors is an integer number (25509750).

Almost surely, 2^189212699 is an apocalyptic number.

189212699 is a deficient number, since it is larger than the sum of its proper divisors (14865301).

189212699 is a wasteful number, since it uses less digits than its factorization.

189212699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22189.

The product of its digits is 139968, while the sum is 47.

The square root of 189212699 is about 13755.4606974830. The cubic root of 189212699 is about 574.0945537801.

The spelling of 189212699 in words is "one hundred eighty-nine million, two hundred twelve thousand, six hundred ninety-nine".