499999626 has 72 divisors (see below), whose sum is σ = 1267643520. Its totient is φ = 142014096.

The previous prime is 499999613. The next prime is 499999693. The reversal of 499999626 is 626999994.

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

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 156295 + ... + 159461.

It is an arithmetic number, because the mean of its divisors is an integer number (17606160).

Almost surely, 2^499999626 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499999626, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633821760).

499999626 is an abundant number, since it is smaller than the sum of its proper divisors (767643894).

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

499999626 is a wasteful number, since it uses less digits than its factorization.

499999626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3368 (or 3358 counting only the distinct ones).

The product of its digits is 17006112, while the sum is 63.

The square root of 499999626 is about 22360.6714121021. The cubic root of 499999626 is about 793.7003280881.

The spelling of 499999626 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, six hundred twenty-six".