49845109 has 4 divisors (see below), whose sum is σ = 49979116. Its totient is φ = 49711104.

The previous prime is 49845101. The next prime is 49845143. The reversal of 49845109 is 90154894.

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 24059025 + 25786084 = 4905^2 + 5078^2 .

It is a cyclic number.

It is not a de Polignac number, because 49845109 - 2³ = 49845101 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 (49845101) 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, 66444 + ... + 67189.

It is an arithmetic number, because the mean of its divisors is an integer number (12494779).

Almost surely, 2^49845109 is an apocalyptic number.

It is an amenable number.

49845109 is a deficient number, since it is larger than the sum of its proper divisors (134007).

49845109 is a wasteful number, since it uses less digits than its factorization.

49845109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134006.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 49845109 is about 7060.1068688795. The cubic root of 49845109 is about 368.0223408184.

The spelling of 49845109 in words is "forty-nine million, eight hundred forty-five thousand, one hundred nine".