499538340 has 480 divisors, whose sum is σ = 1951488000. Its totient is φ = 106686720.

The previous prime is 499538317. The next prime is 499538359. The reversal of 499538340 is 43835994.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 16114125 + ... + 16114155.

It is an arithmetic number, because the mean of its divisors is an integer number (4065600).

Almost surely, 2^499538340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499538340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (975744000).

499538340 is an abundant number, since it is smaller than the sum of its proper divisors (1451949660).

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

499538340 is a wasteful number, since it uses less digits than its factorization.

499538340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 499538340 is about 22350.3543596069. The cubic root of 499538340 is about 793.4561709061.

The spelling of 499538340 in words is "four hundred ninety-nine million, five hundred thirty-eight thousand, three hundred forty".