499243651 has 4 divisors (see below), whose sum is σ = 499813792. Its totient is φ = 498673512.

The previous prime is 499243649. The next prime is 499243669. The reversal of 499243651 is 156342994.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 499243651 - 2¹ = 499243649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499243598 and 499243607.

It is not an unprimeable number, because it can be changed into a prime (499243621) 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, 283755 + ... + 285508.

It is an arithmetic number, because the mean of its divisors is an integer number (124953448).

Almost surely, 2^499243651 is an apocalyptic number.

499243651 is a deficient number, since it is larger than the sum of its proper divisors (570141).

499243651 is an equidigital number, since it uses as much as digits as its factorization.

499243651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570140.

The product of its digits is 233280, while the sum is 43.

The square root of 499243651 is about 22343.7608965008. The cubic root of 499243651 is about 793.3001142828.

The spelling of 499243651 in words is "four hundred ninety-nine million, two hundred forty-three thousand, six hundred fifty-one".