84404080 has 40 divisors (see below), whose sum is σ = 206571600. Its totient is φ = 31984128.

The previous prime is 84404077. The next prime is 84404081. The reversal of 84404080 is 8040448.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84404081) 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, 26245 + ... + 29284.

It is an arithmetic number, because the mean of its divisors is an integer number (5164290).

Almost surely, 2^84404080 is an apocalyptic number.

84404080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84404080 is an abundant number, since it is smaller than the sum of its proper divisors (122167520).

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

84404080 is a wasteful number, since it uses less digits than its factorization.

84404080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55561 (or 55555 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 84404080 is about 9187.1693137767. The cubic root of 84404080 is about 438.6530433506.

The spelling of 84404080 in words is "eighty-four million, four hundred four thousand, eighty".