49139723 has 2 divisors, whose sum is σ = 49139724. Its totient is φ = 49139722.

The previous prime is 49139687. The next prime is 49139747. The reversal of 49139723 is 32793194.

49139723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49139723 - 2¹⁴ = 49123339 is a prime.

It is not a weakly prime, because it can be changed into another prime (49139423) 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 as a sum of consecutive naturals, namely, 24569861 + 24569862.

It is an arithmetic number, because the mean of its divisors is an integer number (24569862).

Almost surely, 2^49139723 is an apocalyptic number.

49139723 is a deficient number, since it is larger than the sum of its proper divisors (1).

49139723 is an equidigital number, since it uses as much as digits as its factorization.

49139723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 38.

The square root of 49139723 is about 7009.9731097915. The cubic root of 49139723 is about 366.2780566904.

The spelling of 49139723 in words is "forty-nine million, one hundred thirty-nine thousand, seven hundred twenty-three".