49217916439 has 2 divisors, whose sum is σ = 49217916440. Its totient is φ = 49217916438.

The previous prime is 49217916373. The next prime is 49217916443. The reversal of 49217916439 is 93461971294.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49217916439 - 2⁷ = 49217916311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49217916439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49217910439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24608958219 + 24608958220.

It is an arithmetic number, because the mean of its divisors is an integer number (24608958220).

Almost surely, 2^49217916439 is an apocalyptic number.

49217916439 is a deficient number, since it is larger than the sum of its proper divisors (1).

49217916439 is an equidigital number, since it uses as much as digits as its factorization.

49217916439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 55.

It can be divided in two parts, 4921791 and 6439, that added together give a triangular number (4928230 = T₃₁₃₉).

The spelling of 49217916439 in words is "forty-nine billion, two hundred seventeen million, nine hundred sixteen thousand, four hundred thirty-nine".