499998749 has 2 divisors, whose sum is σ = 499998750. Its totient is φ = 499998748.

The previous prime is 499998683. The next prime is 499998757. The reversal of 499998749 is 947899994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305200900 + 194797849 = 17470^2 + 13957^2 .

It is a cyclic number.

It is not a de Polignac number, because 499998749 - 2⁸ = 499998493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499998799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249999374 + 249999375.

It is an arithmetic number, because the mean of its divisors is an integer number (249999375).

Almost surely, 2^499998749 is an apocalyptic number.

It is an amenable number.

499998749 is a deficient number, since it is larger than the sum of its proper divisors (1).

499998749 is an equidigital number, since it uses as much as digits as its factorization.

499998749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52907904, while the sum is 68.

The square root of 499998749 is about 22360.6518017700. The cubic root of 499998749 is about 793.6998640373.

The spelling of 499998749 in words is "four hundred ninety-nine million, nine hundred ninety-eight thousand, seven hundred forty-nine".