190085899 has 4 divisors (see below), whose sum is σ = 200090440. Its totient is φ = 180081360.

The previous prime is 190085887. The next prime is 190085947. The reversal of 190085899 is 998580091.

It is a happy number.

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 190085899 - 2⁵ = 190085867 is a prime.

It is a super-2 number, since 2×190085899² = 72265297997276402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190085809) 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, 5002242 + ... + 5002279.

It is an arithmetic number, because the mean of its divisors is an integer number (50022610).

Almost surely, 2^190085899 is an apocalyptic number.

190085899 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

190085899 is a deficient number, since it is larger than the sum of its proper divisors (10004541).

190085899 is a wasteful number, since it uses less digits than its factorization.

190085899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10004540.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 190085899 is about 13787.1642842174. The cubic root of 190085899 is about 574.9763307207.

The spelling of 190085899 in words is "one hundred ninety million, eighty-five thousand, eight hundred ninety-nine".