499943659 has 2 divisors, whose sum is σ = 499943660. Its totient is φ = 499943658.

The previous prime is 499943621. The next prime is 499943669. The reversal of 499943659 is 956349994.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499943659 is a prime.

It is a super-3 number, since 3×499943659³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (499943669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249971829 + 249971830.

It is an arithmetic number, because the mean of its divisors is an integer number (249971830).

Almost surely, 2^499943659 is an apocalyptic number.

499943659 is a deficient number, since it is larger than the sum of its proper divisors (1).

499943659 is an equidigital number, since it uses as much as digits as its factorization.

499943659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9447840, while the sum is 58.

The square root of 499943659 is about 22359.4199164468. The cubic root of 499943659 is about 793.6707129434.

The spelling of 499943659 in words is "four hundred ninety-nine million, nine hundred forty-three thousand, six hundred fifty-nine".