499000040 has 128 divisors (see below), whose sum is σ = 1473638400. Its totient is φ = 147329280.

The previous prime is 499000039. The next prime is 499000063. The reversal of 499000040 is 40000994.

It is a junction number, because it is equal to n+sod(n) for n = 498999973 and 499000009.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54257 + ... + 62783.

It is an arithmetic number, because the mean of its divisors is an integer number (11512800).

Almost surely, 2^499000040 is an apocalyptic number.

499000040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499000040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (736819200).

499000040 is an abundant number, since it is smaller than the sum of its proper divisors (974638360).

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

499000040 is a wasteful number, since it uses less digits than its factorization.

499000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8575 (or 8571 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 499000040 is about 22338.3087990116. The cubic root of 499000040 is about 793.1710603455.

The spelling of 499000040 in words is "four hundred ninety-nine million, forty", and thus it is an aban number.