49991199 has 8 divisors (see below), whose sum is σ = 66690480. Its totient is φ = 33309696.

The previous prime is 49991197. The next prime is 49991209. The reversal of 49991199 is 99119994.

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

It is not a de Polignac number, because 49991199 - 2¹ = 49991197 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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (49991197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4969 + ... + 11165.

It is an arithmetic number, because the mean of its divisors is an integer number (8336310).

Almost surely, 2^49991199 is an apocalyptic number.

49991199 is a deficient number, since it is larger than the sum of its proper divisors (16699281).

49991199 is a wasteful number, since it uses less digits than its factorization.

49991199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8889.

The product of its digits is 236196, while the sum is 51.

The square root of 49991199 is about 7070.4454597995. The cubic root of 49991199 is about 368.3815331549.

The spelling of 49991199 in words is "forty-nine million, nine hundred ninety-one thousand, one hundred ninety-nine".