49999812 has 12 divisors (see below), whose sum is σ = 116666256. Its totient is φ = 16666600.

The previous prime is 49999801. The next prime is 49999819. The reversal of 49999812 is 21899994.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (49999819) 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 3 ways as a sum of consecutive naturals, for example, 2083314 + ... + 2083337.

It is an arithmetic number, because the mean of its divisors is an integer number (9722188).

Almost surely, 2^49999812 is an apocalyptic number.

It is an amenable number.

49999812 is an abundant number, since it is smaller than the sum of its proper divisors (66666444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49999812 is a wasteful number, since it uses less digits than its factorization.

49999812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4166658 (or 4166656 counting only the distinct ones).

The product of its digits is 419904, while the sum is 51.

The square root of 49999812 is about 7071.0545182455. The cubic root of 49999812 is about 368.4026881315.

The spelling of 49999812 in words is "forty-nine million, nine hundred ninety-nine thousand, eight hundred twelve".