49739781239 has 2 divisors, whose sum is σ = 49739781240. Its totient is φ = 49739781238.

The previous prime is 49739781197. The next prime is 49739781251. The reversal of 49739781239 is 93218793794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49739781239 - 2⁸ = 49739780983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49739783239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24869890619 + 24869890620.

It is an arithmetic number, because the mean of its divisors is an integer number (24869890620).

Almost surely, 2^49739781239 is an apocalyptic number.

49739781239 is a deficient number, since it is larger than the sum of its proper divisors (1).

49739781239 is an equidigital number, since it uses as much as digits as its factorization.

49739781239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 62.

The spelling of 49739781239 in words is "forty-nine billion, seven hundred thirty-nine million, seven hundred eighty-one thousand, two hundred thirty-nine".