49939812 has 72 divisors (see below), whose sum is σ = 143967096. Its totient is φ = 14459904.

The previous prime is 49939801. The next prime is 49939819. The reversal of 49939812 is 21893994.

It can be written as a sum of positive squares in 4 ways, for example, as 18870336 + 31069476 = 4344^2 + 5574^2 .

It is not an unprimeable number, because it can be changed into a prime (49939819) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4818 + ... + 11094.

It is an arithmetic number, because the mean of its divisors is an integer number (1999543).

Almost surely, 2^49939812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49939812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71983548).

49939812 is an abundant number, since it is smaller than the sum of its proper divisors (94027284).

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

49939812 is a wasteful number, since it uses less digits than its factorization.

49939812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6317 (or 6312 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 49939812 is about 7066.8105960185. The cubic root of 49939812 is about 368.2552675180.

The spelling of 49939812 in words is "forty-nine million, nine hundred thirty-nine thousand, eight hundred twelve".