499981464 has 64 divisors (see below), whose sum is σ = 1396224000. Its totient is φ = 165774240.

The previous prime is 499981457. The next prime is 499981519. The reversal of 499981464 is 464189994.

It is a happy number.

499981464 is a `hidden beast` number, since 4 + 99 + 98 + 1 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 499981464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35197 + ... + 47315.

It is an arithmetic number, because the mean of its divisors is an integer number (21816000).

Almost surely, 2^499981464 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 499981464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698112000).

499981464 is an abundant number, since it is smaller than the sum of its proper divisors (896242536).

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

499981464 is a wasteful number, since it uses less digits than its factorization.

499981464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12325 (or 12315 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 499981464 is about 22360.2652935961. The cubic root of 499981464 is about 793.6907178409.

The spelling of 499981464 in words is "four hundred ninety-nine million, nine hundred eighty-one thousand, four hundred sixty-four".