49311439 has 2 divisors, whose sum is σ = 49311440. Its totient is φ = 49311438.

The previous prime is 49311389. The next prime is 49311443. The reversal of 49311439 is 93411394.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49311439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49311469) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24655719 + 24655720.

It is an arithmetic number, because the mean of its divisors is an integer number (24655720).

Almost surely, 2^49311439 is an apocalyptic number.

49311439 is a deficient number, since it is larger than the sum of its proper divisors (1).

49311439 is an equidigital number, since it uses as much as digits as its factorization.

49311439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 49311439 is about 7022.2104069872. The cubic root of 49311439 is about 366.7042067166.

The spelling of 49311439 in words is "forty-nine million, three hundred eleven thousand, four hundred thirty-nine".