49405779 has 24 divisors (see below), whose sum is σ = 73592064. Its totient is φ = 31920000.

The previous prime is 49405777. The next prime is 49405787. The reversal of 49405779 is 97750494.

It is not a de Polignac number, because 49405779 - 2¹ = 49405777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49405777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70129 + ... + 70829.

It is an arithmetic number, because the mean of its divisors is an integer number (3066336).

Almost surely, 2^49405779 is an apocalyptic number.

49405779 is a deficient number, since it is larger than the sum of its proper divisors (24186285).

49405779 is a wasteful number, since it uses less digits than its factorization.

49405779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 49405779 is about 7028.9244554199. The cubic root of 49405779 is about 366.9379106826.

The spelling of 49405779 in words is "forty-nine million, four hundred five thousand, seven hundred seventy-nine".