499981347427 has 2 divisors, whose sum is σ = 499981347428. Its totient is φ = 499981347426.

The previous prime is 499981347403. The next prime is 499981347431. The reversal of 499981347427 is 724743189994.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499981347427 is a prime.

It is not a weakly prime, because it can be changed into another prime (499985347427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249990673713 + 249990673714.

It is an arithmetic number, because the mean of its divisors is an integer number (249990673714).

Almost surely, 2^499981347427 is an apocalyptic number.

499981347427 is a deficient number, since it is larger than the sum of its proper divisors (1).

499981347427 is an equidigital number, since it uses as much as digits as its factorization.

499981347427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109734912, while the sum is 67.

The spelling of 499981347427 in words is "four hundred ninety-nine billion, nine hundred eighty-one million, three hundred forty-seven thousand, four hundred twenty-seven".