499356081 has 24 divisors (see below), whose sum is σ = 867721920. Its totient is φ = 270327456.

The previous prime is 499356071. The next prime is 499356083. The reversal of 499356081 is 180653994.

It is a happy number.

499356081 is a `hidden beast` number, since 4 + 9 + 9 + 3 + 560 + 81 = 666.

It is not a de Polignac number, because 499356081 - 2⁵ = 499356049 is a prime.

It is a super-2 number, since 2×499356081² = 498712991263357122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (499356083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207390 + ... + 209783.

It is an arithmetic number, because the mean of its divisors is an integer number (36155080).

Almost surely, 2^499356081 is an apocalyptic number.

It is an amenable number.

499356081 is a deficient number, since it is larger than the sum of its proper divisors (368365839).

499356081 is a wasteful number, since it uses less digits than its factorization.

499356081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417205 (or 417202 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 499356081 is about 22346.2766697273. The cubic root of 499356081 is about 793.3596603830.

The spelling of 499356081 in words is "four hundred ninety-nine million, three hundred fifty-six thousand, eighty-one".