199254394 has 4 divisors (see below), whose sum is σ = 298881594. Its totient is φ = 99627196.

The previous prime is 199254379. The next prime is 199254431. The reversal of 199254394 is 493452991.

199254394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 118919025 + 80335369 = 10905^2 + 8963^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49813597 + ... + 49813600.

Almost surely, 2^199254394 is an apocalyptic number.

199254394 is a deficient number, since it is larger than the sum of its proper divisors (99627200).

199254394 is an equidigital number, since it uses as much as digits as its factorization.

199254394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99627199.

The product of its digits is 349920, while the sum is 46.

The square root of 199254394 is about 14115.7498561005. The cubic root of 199254394 is about 584.0759209641.

The spelling of 199254394 in words is "one hundred ninety-nine million, two hundred fifty-four thousand, three hundred ninety-four".