499434783849 has 135 divisors (see below), whose sum is σ = 824460688821. Its totient is φ = 301226791680.

The previous prime is 499434783847. The next prime is 499434783893. The reversal of 499434783849 is 948387434994.

The square root of 499434783849 is 706707.

It is a perfect power (a square), and thus also a powerful number.

499434783849 is a `hidden beast` number, since 4 + 99 + 434 + 78 + 38 + 4 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 9809912025 + 489624871824 = 99045^2 + 699732^2 .

It is not a de Polignac number, because 499434783849 - 2¹ = 499434783847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (499434783847) by changing a digit.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 3351911227 + ... + 3351911375.

Almost surely, 2^499434783849 is an apocalyptic number.

499434783849 is the 706707-th square number.

499434783849 is the 353354-th centered octagonal number.

It is an amenable number.

499434783849 is a deficient number, since it is larger than the sum of its proper divisors (325025904972).

499434783849 is an equidigital number, since it uses as much as digits as its factorization.

499434783849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 200 counting only the distinct ones).

The product of its digits is 752467968, while the sum is 72.

The spelling of 499434783849 in words is "four hundred ninety-nine billion, four hundred thirty-four million, seven hundred eighty-three thousand, eight hundred forty-nine".