139984415491 has 2 divisors, whose sum is σ = 139984415492. Its totient is φ = 139984415490.

The previous prime is 139984415407. The next prime is 139984415503. The reversal of 139984415491 is 194514489931.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (194514489931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139984415491 is a prime.

It is not a weakly prime, because it can be changed into another prime (139984415591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69992207745 + 69992207746.

It is an arithmetic number, because the mean of its divisors is an integer number (69992207746).

Almost surely, 2^139984415491 is an apocalyptic number.

139984415491 is a deficient number, since it is larger than the sum of its proper divisors (1).

139984415491 is an equidigital number, since it uses as much as digits as its factorization.

139984415491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 58.

The spelling of 139984415491 in words is "one hundred thirty-nine billion, nine hundred eighty-four million, four hundred fifteen thousand, four hundred ninety-one".