49999905 has 24 divisors (see below), whose sum is σ = 86898240. Its totient is φ = 26595360.

The previous prime is 49999903. The next prime is 49999921. The reversal of 49999905 is 50999994.

It is a happy number.

49999905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49999905 - 2¹ = 49999903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49999903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18490 + ... + 21020.

It is an arithmetic number, because the mean of its divisors is an integer number (3620760).

Almost surely, 2^49999905 is an apocalyptic number.

49999905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49999905 is a deficient number, since it is larger than the sum of its proper divisors (36898335).

49999905 is a wasteful number, since it uses less digits than its factorization.

49999905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 1180980, while the sum is 54.

The square root of 49999905 is about 7071.0610943479. The cubic root of 49999905 is about 368.4029165419.

The spelling of 49999905 in words is "forty-nine million, nine hundred ninety-nine thousand, nine hundred five".