49998865 has 24 divisors (see below), whose sum is σ = 70609320. Its totient is φ = 33884928.

The previous prime is 49998857. The next prime is 49998869. The reversal of 49998865 is 56889994.

It can be written as a sum of positive squares in 4 ways, for example, as 112896 + 49885969 = 336^2 + 7063^2 .

It is not a de Polignac number, because 49998865 - 2³ = 49998857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49998869) 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, 20659 + ... + 22951.

It is an arithmetic number, because the mean of its divisors is an integer number (2942055).

Almost surely, 2^49998865 is an apocalyptic number.

It is an amenable number.

49998865 is a deficient number, since it is larger than the sum of its proper divisors (20610455).

49998865 is a wasteful number, since it uses less digits than its factorization.

49998865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401 (or 2394 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 58.

The square root of 49998865 is about 7070.9875547903. The cubic root of 49998865 is about 368.4003622591.

The spelling of 49998865 in words is "forty-nine million, nine hundred ninety-eight thousand, eight hundred sixty-five".