49942813 has 4 divisors (see below), whose sum is σ = 49957020. Its totient is φ = 49928608.

The previous prime is 49942807. The next prime is 49942847. The reversal of 49942813 is 31824994.

49942813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 127449 + 49815364 = 357^2 + 7058^2 .

It is a cyclic number.

It is not a de Polignac number, because 49942813 - 2⁹ = 49942301 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 (49942883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2481 + ... + 10297.

It is an arithmetic number, because the mean of its divisors is an integer number (12489255).

Almost surely, 2^49942813 is an apocalyptic number.

It is an amenable number.

49942813 is a deficient number, since it is larger than the sum of its proper divisors (14207).

49942813 is an equidigital number, since it uses as much as digits as its factorization.

49942813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14206.

The product of its digits is 62208, while the sum is 40.

The square root of 49942813 is about 7067.0229234098. The cubic root of 49942813 is about 368.2626438101.

The spelling of 49942813 in words is "forty-nine million, nine hundred forty-two thousand, eight hundred thirteen".