49991205 has 16 divisors (see below), whose sum is σ = 87257664. Its totient is φ = 24238080.

The previous prime is 49991197. The next prime is 49991209. The reversal of 49991205 is 50219994.

It is not a de Polignac number, because 49991205 - 2³ = 49991197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49991209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151324 + ... + 151653.

It is an arithmetic number, because the mean of its divisors is an integer number (5453604).

Almost surely, 2^49991205 is an apocalyptic number.

It is an amenable number.

49991205 is a deficient number, since it is larger than the sum of its proper divisors (37266459).

49991205 is a wasteful number, since it uses less digits than its factorization.

49991205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302996.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 49991205 is about 7070.4458841009. The cubic root of 49991205 is about 368.3815478927.

The spelling of 49991205 in words is "forty-nine million, nine hundred ninety-one thousand, two hundred five".