49995779 has 2 divisors, whose sum is σ = 49995780. Its totient is φ = 49995778.

The previous prime is 49995761. The next prime is 49995787. The reversal of 49995779 is 97759994.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49995779 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49995719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24997889 + 24997890.

It is an arithmetic number, because the mean of its divisors is an integer number (24997890).

Almost surely, 2^49995779 is an apocalyptic number.

49995779 is a deficient number, since it is larger than the sum of its proper divisors (1).

49995779 is an equidigital number, since it uses as much as digits as its factorization.

49995779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6429780, while the sum is 59.

The square root of 49995779 is about 7070.7693357937. The cubic root of 49995779 is about 368.3927827077.

The spelling of 49995779 in words is "forty-nine million, nine hundred ninety-five thousand, seven hundred seventy-nine".