84316440 has 64 divisors (see below), whose sum is σ = 272412000. Its totient is φ = 20754432.

The previous prime is 84316429. The next prime is 84316469. The reversal of 84316440 is 4461348.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 84316398 and 84316407.

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, 25465 + ... + 28584.

Almost surely, 2^84316440 is an apocalyptic number.

It is an amenable number.

84316440 is an abundant number, since it is smaller than the sum of its proper divisors (188095560).

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

84316440 is a wasteful number, since it uses less digits than its factorization.

84316440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54076 (or 54072 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 84316440 is about 9182.3983795085. The cubic root of 84316440 is about 438.5011673347.

Adding to 84316440 its reverse (4461348), we get a palindrome (88777788).

The spelling of 84316440 in words is "eighty-four million, three hundred sixteen thousand, four hundred forty".