499540 has 12 divisors (see below), whose sum is σ = 1049076. Its totient is φ = 199808.

The previous prime is 499523. The next prime is 499549. The reversal of 499540 is 45994.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 71824 + 427716 = 268^2 + 654^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499549) 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, 12469 + ... + 12508.

It is an arithmetic number, because the mean of its divisors is an integer number (87423).

2⁴⁹⁹⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

499540 is an abundant number, since it is smaller than the sum of its proper divisors (549536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

499540 is a wasteful number, since it uses less digits than its factorization.

499540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24986 (or 24984 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 499540 is about 706.7814372209. The cubic root of 499540 is about 79.3457049808.

The spelling of 499540 in words is "four hundred ninety-nine thousand, five hundred forty".