499402735409 has 2 divisors, whose sum is σ = 499402735410. Its totient is φ = 499402735408.

The previous prime is 499402735301. The next prime is 499402735411. The reversal of 499402735409 is 904537204994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 464817150625 + 34585584784 = 681775^2 + 185972^2 .

It is a cyclic number.

It is not a de Polignac number, because 499402735409 - 2³⁶ = 430683258673 is a prime.

Together with 499402735411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (499402735609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249701367704 + 249701367705.

It is an arithmetic number, because the mean of its divisors is an integer number (249701367705).

Almost surely, 2^499402735409 is an apocalyptic number.

It is an amenable number.

499402735409 is a deficient number, since it is larger than the sum of its proper divisors (1).

499402735409 is an equidigital number, since it uses as much as digits as its factorization.

499402735409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 56.

The spelling of 499402735409 in words is "four hundred ninety-nine billion, four hundred two million, seven hundred thirty-five thousand, four hundred nine".