49813729 has 16 divisors (see below), whose sum is σ = 59907456. Its totient is φ = 40521600.

The previous prime is 49813681. The next prime is 49813739. The reversal of 49813729 is 92731894.

It is not a de Polignac number, because 49813729 - 2⁷ = 49813601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49813739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8274 + ... + 12964.

It is an arithmetic number, because the mean of its divisors is an integer number (3744216).

Almost surely, 2^49813729 is an apocalyptic number.

It is an amenable number.

49813729 is a deficient number, since it is larger than the sum of its proper divisors (10093727).

49813729 is a wasteful number, since it uses less digits than its factorization.

49813729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4776.

The product of its digits is 108864, while the sum is 43.

The square root of 49813729 is about 7057.8841730366. The cubic root of 49813729 is about 367.9450950893.

The spelling of 49813729 in words is "forty-nine million, eight hundred thirteen thousand, seven hundred twenty-nine".