499388400 has 540 divisors, whose sum is σ = 2136303000. Its totient is φ = 107412480.

The previous prime is 499388389. The next prime is 499388429. The reversal of 499388400 is 4883994.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 3351526 + ... + 3351674.

Almost surely, 2^499388400 is an apocalyptic number.

499388400 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 499388400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1068151500).

499388400 is an abundant number, since it is smaller than the sum of its proper divisors (1636914600).

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

499388400 is a wasteful number, since it uses less digits than its factorization.

499388400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 499388400 is about 22346.9997986307. Note that the first 3 decimals coincide. The cubic root of 499388400 is about 793.3767757833.

The spelling of 499388400 in words is "four hundred ninety-nine million, three hundred eighty-eight thousand, four hundred".