49991616 has 84 divisors (see below), whose sum is σ = 144297400. Its totient is φ = 16547328.

The previous prime is 49991609. The next prime is 49991629. The reversal of 49991616 is 61619994.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 131715 + ... + 132093.

Almost surely, 2^49991616 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 49991616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72148700).

49991616 is an abundant number, since it is smaller than the sum of its proper divisors (94305784).

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

49991616 is a wasteful number, since it uses less digits than its factorization.

49991616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 613 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 49991616 is about 7070.4749486863. The cubic root of 49991616 is about 368.3825574330.

The spelling of 49991616 in words is "forty-nine million, nine hundred ninety-one thousand, six hundred sixteen".