49913729 has 2 divisors, whose sum is σ = 49913730. Its totient is φ = 49913728.

The previous prime is 49913711. The next prime is 49913753. The reversal of 49913729 is 92731994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43033600 + 6880129 = 6560^2 + 2623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49913729 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49913729.

It is not a weakly prime, because it can be changed into another prime (49913029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24956864 + 24956865.

It is an arithmetic number, because the mean of its divisors is an integer number (24956865).

Almost surely, 2^49913729 is an apocalyptic number.

It is an amenable number.

49913729 is a deficient number, since it is larger than the sum of its proper divisors (1).

49913729 is an equidigital number, since it uses as much as digits as its factorization.

49913729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 44.

The square root of 49913729 is about 7064.9648972943. The cubic root of 49913729 is about 368.1911444969.

The spelling of 49913729 in words is "forty-nine million, nine hundred thirteen thousand, seven hundred twenty-nine".