199254399 has 8 divisors (see below), whose sum is σ = 281300400. Its totient is φ = 125022336.

The previous prime is 199254379. The next prime is 199254431. The reversal of 199254399 is 993452991.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199254399 - 2¹⁶ = 199188863 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (51), and also a Moran number because the ratio is a prime number: 3906949 = 199254399 / (1 + 9 + 9 + 2 + 5 + 4 + 3 + 9 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199254379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953424 + ... + 1953525.

It is an arithmetic number, because the mean of its divisors is an integer number (35162550).

Almost surely, 2^199254399 is an apocalyptic number.

199254399 is a deficient number, since it is larger than the sum of its proper divisors (82046001).

199254399 is a wasteful number, since it uses less digits than its factorization.

199254399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906969.

The product of its digits is 787320, while the sum is 51.

The square root of 199254399 is about 14115.7500332076. The cubic root of 199254399 is about 584.0759258497.

The spelling of 199254399 in words is "one hundred ninety-nine million, two hundred fifty-four thousand, three hundred ninety-nine".