49988197439 has 2 divisors, whose sum is σ = 49988197440. Its totient is φ = 49988197438.

The previous prime is 49988197409. The next prime is 49988197471. The reversal of 49988197439 is 93479188994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49988197439 - 2¹⁶ = 49988131903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49988197409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24994098719 + 24994098720.

It is an arithmetic number, because the mean of its divisors is an integer number (24994098720).

Almost surely, 2^49988197439 is an apocalyptic number.

49988197439 is a deficient number, since it is larger than the sum of its proper divisors (1).

49988197439 is an equidigital number, since it uses as much as digits as its factorization.

49988197439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141087744, while the sum is 71.

The spelling of 49988197439 in words is "forty-nine billion, nine hundred eighty-eight million, one hundred ninety-seven thousand, four hundred thirty-nine".