499787331493 has 2 divisors, whose sum is σ = 499787331494. Its totient is φ = 499787331492.

The previous prime is 499787331469. The next prime is 499787331499. The reversal of 499787331493 is 394133787994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355886219844 + 143901111649 = 596562^2 + 379343^2 .

It is a cyclic number.

It is not a de Polignac number, because 499787331493 - 2⁹ = 499787330981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499787331499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249893665746 + 249893665747.

It is an arithmetic number, because the mean of its divisors is an integer number (249893665747).

Almost surely, 2^499787331493 is an apocalyptic number.

It is an amenable number.

499787331493 is a deficient number, since it is larger than the sum of its proper divisors (1).

499787331493 is an equidigital number, since it uses as much as digits as its factorization.

499787331493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 123451776, while the sum is 67.

The spelling of 499787331493 in words is "four hundred ninety-nine billion, seven hundred eighty-seven million, three hundred thirty-one thousand, four hundred ninety-three".