39149124887 has 2 divisors, whose sum is σ = 39149124888. Its totient is φ = 39149124886.

The previous prime is 39149124857. The next prime is 39149124919. The reversal of 39149124887 is 78842194193.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39149124887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39149124857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19574562443 + 19574562444.

It is an arithmetic number, because the mean of its divisors is an integer number (19574562444).

Almost surely, 2^39149124887 is an apocalyptic number.

39149124887 is a deficient number, since it is larger than the sum of its proper divisors (1).

39149124887 is an equidigital number, since it uses as much as digits as its factorization.

39149124887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 56.

The spelling of 39149124887 in words is "thirty-nine billion, one hundred forty-nine million, one hundred twenty-four thousand, eight hundred eighty-seven".