49938109 has 4 divisors (see below), whose sum is σ = 53779516. Its totient is φ = 46096704.

The previous prime is 49938107. The next prime is 49938127. The reversal of 49938109 is 90183994.

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 12996025 + 36942084 = 3605^2 + 6078^2 .

It is a cyclic number.

It is not a de Polignac number, because 49938109 - 2¹ = 49938107 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 (49938101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920684 + ... + 1920709.

It is an arithmetic number, because the mean of its divisors is an integer number (13444879).

Almost surely, 2^49938109 is an apocalyptic number.

It is an amenable number.

49938109 is a deficient number, since it is larger than the sum of its proper divisors (3841407).

49938109 is a wasteful number, since it uses less digits than its factorization.

49938109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841406.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 49938109 is about 7066.6901021624. The cubic root of 49938109 is about 368.2510815067.

The spelling of 49938109 in words is "forty-nine million, nine hundred thirty-eight thousand, one hundred nine".