84400080 has 40 divisors (see below), whose sum is σ = 261640992. Its totient is φ = 22506624.

The previous prime is 84400067. The next prime is 84400093. The reversal of 84400080 is 8000448.

It is an interprime number because it is at equal distance from previous prime (84400067) and next prime (84400093).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 84400080.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175594 + ... + 176073.

Almost surely, 2^84400080 is an apocalyptic number.

84400080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84400080 is an abundant number, since it is smaller than the sum of its proper divisors (177240912).

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

84400080 is a wasteful number, since it uses less digits than its factorization.

84400080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351683 (or 351677 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 84400080 is about 9186.9516162871. The cubic root of 84400080 is about 438.6461138282.

The spelling of 84400080 in words is "eighty-four million, four hundred thousand, eighty".