499454161 has 4 divisors (see below), whose sum is σ = 499536052. Its totient is φ = 499372272.

The previous prime is 499454149. The next prime is 499454167. The reversal of 499454161 is 161454994.

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

It can be written as a sum of positive squares in 2 ways, for example, as 139972561 + 359481600 = 11831^2 + 18960^2 .

It is a cyclic number.

It is not a de Polignac number, because 499454161 - 2⁹ = 499453649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499454167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30990 + ... + 44263.

It is an arithmetic number, because the mean of its divisors is an integer number (124884013).

Almost surely, 2^499454161 is an apocalyptic number.

It is an amenable number.

499454161 is a deficient number, since it is larger than the sum of its proper divisors (81891).

499454161 is an equidigital number, since it uses as much as digits as its factorization.

499454161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81890.

The product of its digits is 155520, while the sum is 43.

The square root of 499454161 is about 22348.4711110179. The cubic root of 499454161 is about 793.4115990192.

The spelling of 499454161 in words is "four hundred ninety-nine million, four hundred fifty-four thousand, one hundred sixty-one".