199043854 has 16 divisors (see below), whose sum is σ = 321314256. Its totient is φ = 92131200.

The previous prime is 199043843. The next prime is 199043869. The reversal of 199043854 is 458340991.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 199043854.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45912 + ... + 50059.

It is an arithmetic number, because the mean of its divisors is an integer number (20082141).

Almost surely, 2^199043854 is an apocalyptic number.

199043854 is a deficient number, since it is larger than the sum of its proper divisors (122270402).

199043854 is a wasteful number, since it uses less digits than its factorization.

199043854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96051.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 199043854 is about 14108.2902578590. The cubic root of 199043854 is about 583.8701292967.

The spelling of 199043854 in words is "one hundred ninety-nine million, forty-three thousand, eight hundred fifty-four".