49988861 has 4 divisors (see below), whose sum is σ = 53834172. Its totient is φ = 46143552.

The previous prime is 49988849. The next prime is 49988879. The reversal of 49988861 is 16888994.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3667225 + 46321636 = 1915^2 + 6806^2 .

It is not a de Polignac number, because 49988861 - 2⁶ = 49988797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49988801) 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, 1922636 + ... + 1922661.

It is an arithmetic number, because the mean of its divisors is an integer number (13458543).

Almost surely, 2^49988861 is an apocalyptic number.

It is an amenable number.

49988861 is a deficient number, since it is larger than the sum of its proper divisors (3845311).

49988861 is a wasteful number, since it uses less digits than its factorization.

49988861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3845310.

The product of its digits is 995328, while the sum is 53.

The square root of 49988861 is about 7070.2801217491. The cubic root of 49988861 is about 368.3757902143.

The spelling of 49988861 in words is "forty-nine million, nine hundred eighty-eight thousand, eight hundred sixty-one".