499999999943 has 2 divisors, whose sum is σ = 499999999944. Its totient is φ = 499999999942.

The previous prime is 499999999901. The next prime is 499999999979. The reversal of 499999999943 is 349999999994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 499999999943 - 2¹⁴ = 499999983559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499999999043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249999999971 + 249999999972.

It is an arithmetic number, because the mean of its divisors is an integer number (249999999972).

Almost surely, 2^499999999943 is an apocalyptic number.

499999999943 is a deficient number, since it is larger than the sum of its proper divisors (1).

499999999943 is an equidigital number, since it uses as much as digits as its factorization.

499999999943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18596183472, while the sum is 92.

The spelling of 499999999943 in words is "four hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred forty-three".