499530791 has 4 divisors (see below), whose sum is σ = 500062584. Its totient is φ = 498999000.

The previous prime is 499530743. The next prime is 499530817. The reversal of 499530791 is 197035994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197035994 = 2 ⋅98517997.

It is a cyclic number.

It is not a de Polignac number, because 499530791 - 2¹⁸ = 499268647 is a prime.

It is a super-2 number, since 2×499530791² = 499062022314171362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499530701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264485 + ... + 266366.

It is an arithmetic number, because the mean of its divisors is an integer number (125015646).

Almost surely, 2^499530791 is an apocalyptic number.

499530791 is a deficient number, since it is larger than the sum of its proper divisors (531793).

499530791 is an equidigital number, since it uses as much as digits as its factorization.

499530791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531792.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 499530791 is about 22350.1854802147. The cubic root of 499530791 is about 793.4521739952.

The spelling of 499530791 in words is "four hundred ninety-nine million, five hundred thirty thousand, seven hundred ninety-one".