499649543 has 2 divisors, whose sum is σ = 499649544. Its totient is φ = 499649542.

The previous prime is 499649519. The next prime is 499649587. The reversal of 499649543 is 345946994.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 499649543 - 2⁸ = 499649287 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499649503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249824771 + 249824772.

It is an arithmetic number, because the mean of its divisors is an integer number (249824772).

Almost surely, 2^499649543 is an apocalyptic number.

499649543 is a deficient number, since it is larger than the sum of its proper divisors (1).

499649543 is an equidigital number, since it uses as much as digits as its factorization.

499649543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 53.

The square root of 499649543 is about 22352.8419445940. The cubic root of 499649543 is about 793.5150440382.

The spelling of 499649543 in words is "four hundred ninety-nine million, six hundred forty-nine thousand, five hundred forty-three".