199228894 has 4 divisors (see below), whose sum is σ = 298843344. Its totient is φ = 99614446.

The previous prime is 199228879. The next prime is 199228901. The reversal of 199228894 is 498822991.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49807222 + ... + 49807225.

It is an arithmetic number, because the mean of its divisors is an integer number (74710836).

Almost surely, 2^199228894 is an apocalyptic number.

199228894 is a deficient number, since it is larger than the sum of its proper divisors (99614450).

199228894 is an equidigital number, since it uses as much as digits as its factorization.

199228894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99614449.

The product of its digits is 746496, while the sum is 52.

The square root of 199228894 is about 14114.8465808170. The cubic root of 199228894 is about 584.0510037865.

The spelling of 199228894 in words is "one hundred ninety-nine million, two hundred twenty-eight thousand, eight hundred ninety-four".