199842894 has 24 divisors (see below), whose sum is σ = 433552392. Its totient is φ = 66528240.

The previous prime is 199842869. The next prime is 199842899. The reversal of 199842894 is 498248991.

It is a self number, because there is not a number n which added to its sum of digits gives 199842894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199842899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8017 + ... + 21539.

It is an arithmetic number, because the mean of its divisors is an integer number (18064683).

Almost surely, 2^199842894 is an apocalyptic number.

199842894 is an abundant number, since it is smaller than the sum of its proper divisors (233709498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199842894 is a wasteful number, since it uses less digits than its factorization.

199842894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14352 (or 14349 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 199842894 is about 14136.5799965904. The cubic root of 199842894 is about 584.6503806195.

The spelling of 199842894 in words is "one hundred ninety-nine million, eight hundred forty-two thousand, eight hundred ninety-four".