499407323688 has 256 divisors, whose sum is σ = 1714535424000. Its totient is φ = 131159492352.

The previous prime is 499407323663. The next prime is 499407323689. The reversal of 499407323688 is 886323704994.

499407323688 is a `hidden beast` number, since 4 + 99 + 407 + 32 + 36 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (499407323689) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4644631 + ... + 4750937.

It is an arithmetic number, because the mean of its divisors is an integer number (6697404000).

Almost surely, 2^499407323688 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 499407323688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857267712000).

499407323688 is an abundant number, since it is smaller than the sum of its proper divisors (1215128100312).

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

499407323688 is a wasteful number, since it uses less digits than its factorization.

499407323688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106581 (or 106571 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 63.

The spelling of 499407323688 in words is "four hundred ninety-nine billion, four hundred seven million, three hundred twenty-three thousand, six hundred eighty-eight".