499953143 has 2 divisors, whose sum is σ = 499953144. Its totient is φ = 499953142.

The previous prime is 499953109. The next prime is 499953173. The reversal of 499953143 is 341359994.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 499953143 - 2¹⁶ = 499887607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499953173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249976571 + 249976572.

It is an arithmetic number, because the mean of its divisors is an integer number (249976572).

Almost surely, 2^499953143 is an apocalyptic number.

499953143 is a deficient number, since it is larger than the sum of its proper divisors (1).

499953143 is an equidigital number, since it uses as much as digits as its factorization.

499953143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 47.

The square root of 499953143 is about 22359.6319960772. The cubic root of 499953143 is about 793.6757315925.

The spelling of 499953143 in words is "four hundred ninety-nine million, nine hundred fifty-three thousand, one hundred forty-three".