189699907 has 4 divisors (see below), whose sum is σ = 194326776. Its totient is φ = 185073040.

The previous prime is 189699901. The next prime is 189699919. The reversal of 189699907 is 709996981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189699907 - 2⁷ = 189699779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189699901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2313373 + ... + 2313454.

It is an arithmetic number, because the mean of its divisors is an integer number (48581694).

Almost surely, 2^189699907 is an apocalyptic number.

189699907 is a deficient number, since it is larger than the sum of its proper divisors (4626869).

189699907 is an equidigital number, since it uses as much as digits as its factorization.

189699907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4626868.

The product of its (nonzero) digits is 2204496, while the sum is 58.

The square root of 189699907 is about 13773.1589332295. The cubic root of 189699907 is about 574.5868810783.

The spelling of 189699907 in words is "one hundred eighty-nine million, six hundred ninety-nine thousand, nine hundred seven".