499421916 has 144 divisors (see below), whose sum is σ = 1585785600. Its totient is φ = 135154656.

The previous prime is 499421887. The next prime is 499421933. The reversal of 499421916 is 619124994.

It is a super-2 number, since 2×499421916² = 498844500362222112, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 98065 + ... + 103031.

It is an arithmetic number, because the mean of its divisors is an integer number (11012400).

Almost surely, 2^499421916 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 499421916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (792892800).

499421916 is an abundant number, since it is smaller than the sum of its proper divisors (1086363684).

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

499421916 is a wasteful number, since it uses less digits than its factorization.

499421916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5013 (or 4998 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 499421916 is about 22347.7496853710. The cubic root of 499421916 is about 793.3945243074.

The spelling of 499421916 in words is "four hundred ninety-nine million, four hundred twenty-one thousand, nine hundred sixteen".