499908389749 has 2 divisors, whose sum is σ = 499908389750. Its totient is φ = 499908389748.

The previous prime is 499908389731. The next prime is 499908389791. The reversal of 499908389749 is 947983809994.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499714679025 + 193710724 = 706905^2 + 13918^2 .

It is a cyclic number.

It is not a de Polignac number, because 499908389749 - 2¹¹ = 499908387701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499908389719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249954194874 + 249954194875.

It is an arithmetic number, because the mean of its divisors is an integer number (249954194875).

Almost surely, 2^499908389749 is an apocalyptic number.

It is an amenable number.

499908389749 is a deficient number, since it is larger than the sum of its proper divisors (1).

499908389749 is an equidigital number, since it uses as much as digits as its factorization.

499908389749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1269789696, while the sum is 79.

The spelling of 499908389749 in words is "four hundred ninety-nine billion, nine hundred eight million, three hundred eighty-nine thousand, seven hundred forty-nine".