190934989 has 8 divisors (see below), whose sum is σ = 219878208. Its totient is φ = 162408480.

The previous prime is 190934981. The next prime is 190935001. The reversal of 190934989 is 989439091.

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

It is a cyclic number.

It is not a de Polignac number, because 190934989 - 2³ = 190934981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190934981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103192 + ... + 105025.

It is an arithmetic number, because the mean of its divisors is an integer number (27484776).

Almost surely, 2^190934989 is an apocalyptic number.

It is an amenable number.

190934989 is a deficient number, since it is larger than the sum of its proper divisors (28943219).

190934989 is a wasteful number, since it uses less digits than its factorization.

190934989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208355.

The product of its (nonzero) digits is 629856, while the sum is 52.

The square root of 190934989 is about 13817.9227454781. The cubic root of 190934989 is about 575.8311750032.

The spelling of 190934989 in words is "one hundred ninety million, nine hundred thirty-four thousand, nine hundred eighty-nine".