49442813 has 6 divisors (see below), whose sum is σ = 57515166. Its totient is φ = 42379512.

The previous prime is 49442791. The next prime is 49442821. The reversal of 49442813 is 31824494.

It can be written as a sum of positive squares in only one way, i.e., 36747844 + 12694969 = 6062^2 + 3563^2 .

It is not a de Polignac number, because 49442813 - 2²⁰ = 48394237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49442873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 504470 + ... + 504567.

It is an arithmetic number, because the mean of its divisors is an integer number (9585861).

Almost surely, 2^49442813 is an apocalyptic number.

It is an amenable number.

49442813 is a deficient number, since it is larger than the sum of its proper divisors (8072353).

49442813 is a wasteful number, since it uses less digits than its factorization.

49442813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009051 (or 1009044 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 49442813 is about 7031.5583621271. The cubic root of 49442813 is about 367.0295719204.

The spelling of 49442813 in words is "forty-nine million, four hundred forty-two thousand, eight hundred thirteen".