49309879 has 2 divisors, whose sum is σ = 49309880. Its totient is φ = 49309878.

The previous prime is 49309873. The next prime is 49309891. The reversal of 49309879 is 97890394.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49309879 - 2⁷ = 49309751 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49309873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24654939 + 24654940.

It is an arithmetic number, because the mean of its divisors is an integer number (24654940).

Almost surely, 2^49309879 is an apocalyptic number.

49309879 is a deficient number, since it is larger than the sum of its proper divisors (1).

49309879 is an equidigital number, since it uses as much as digits as its factorization.

49309879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 49309879 is about 7022.0993299725. The cubic root of 49309879 is about 366.7003396991.

The spelling of 49309879 in words is "forty-nine million, three hundred nine thousand, eight hundred seventy-nine".