84409960 has 32 divisors (see below), whose sum is σ = 190794240. Its totient is φ = 33609024.

The previous prime is 84409937. The next prime is 84409961. The reversal of 84409960 is 6990448.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (84409961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4189 + ... + 13651.

It is an arithmetic number, because the mean of its divisors is an integer number (5962320).

Almost surely, 2^84409960 is an apocalyptic number.

It is an amenable number.

84409960 is an abundant number, since it is smaller than the sum of its proper divisors (106384280).

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

84409960 is a wasteful number, since it uses less digits than its factorization.

84409960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9697 (or 9693 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 84409960 is about 9187.4893197217. The cubic root of 84409960 is about 438.6632293511.

The spelling of 84409960 in words is "eighty-four million, four hundred nine thousand, nine hundred sixty".