49999986 has 24 divisors (see below), whose sum is σ = 108480060. Its totient is φ = 16644096.

The previous prime is 49999921. The next prime is 49999991. The reversal of 49999986 is 68999994.

It can be written as a sum of positive squares in 2 ways, for example, as 48734361 + 1265625 = 6981^2 + 1125^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16786 + ... + 19538.

Almost surely, 2^49999986 is an apocalyptic number.

49999986 is an abundant number, since it is smaller than the sum of its proper divisors (58480074).

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

49999986 is a wasteful number, since it uses less digits than its factorization.

49999986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770 (or 3767 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 63.

The square root of 49999986 is about 7071.0668219159. The cubic root of 49999986 is about 368.4031154797.

The spelling of 49999986 in words is "forty-nine million, nine hundred ninety-nine thousand, nine hundred eighty-six".