49839913 has 2 divisors, whose sum is σ = 49839914. Its totient is φ = 49839912.

The previous prime is 49839901. The next prime is 49839917. The reversal of 49839913 is 31993894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29073664 + 20766249 = 5392^2 + 4557^2 .

It is a cyclic number.

It is not a de Polignac number, because 49839913 - 2⁹ = 49839401 is a prime.

It is not a weakly prime, because it can be changed into another prime (49839917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24919956 + 24919957.

It is an arithmetic number, because the mean of its divisors is an integer number (24919957).

Almost surely, 2^49839913 is an apocalyptic number.

It is an amenable number.

49839913 is a deficient number, since it is larger than the sum of its proper divisors (1).

49839913 is an equidigital number, since it uses as much as digits as its factorization.

49839913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 46.

The square root of 49839913 is about 7059.7388761908. The cubic root of 49839913 is about 368.0095524655.

The spelling of 49839913 in words is "forty-nine million, eight hundred thirty-nine thousand, nine hundred thirteen".