189699992 has 8 divisors (see below), whose sum is σ = 355687500. Its totient is φ = 94849992.

The previous prime is 189699977. The next prime is 189700019. The reversal of 189699992 is 299996981.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11856242 + ... + 11856257.

Almost surely, 2^189699992 is an apocalyptic number.

It is an amenable number.

189699992 is a deficient number, since it is larger than the sum of its proper divisors (165987508).

189699992 is a wasteful number, since it uses less digits than its factorization.

189699992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23712505 (or 23712501 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 62.

The square root of 189699992 is about 13773.1620189410. The cubic root of 189699992 is about 574.5869668978.

The spelling of 189699992 in words is "one hundred eighty-nine million, six hundred ninety-nine thousand, nine hundred ninety-two".