49577779 has 2 divisors, whose sum is σ = 49577780. Its totient is φ = 49577778.

The previous prime is 49577761. The next prime is 49577807. The reversal of 49577779 is 97777594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49577779 - 2⁹ = 49577267 is a prime.

It is not a weakly prime, because it can be changed into another prime (49577179) 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 as a sum of consecutive naturals, namely, 24788889 + 24788890.

It is an arithmetic number, because the mean of its divisors is an integer number (24788890).

Almost surely, 2^49577779 is an apocalyptic number.

49577779 is a deficient number, since it is larger than the sum of its proper divisors (1).

49577779 is an equidigital number, since it uses as much as digits as its factorization.

49577779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3889620, while the sum is 55.

The square root of 49577779 is about 7041.1489829431. The cubic root of 49577779 is about 367.3632335421.

The spelling of 49577779 in words is "forty-nine million, five hundred seventy-seven thousand, seven hundred seventy-nine".