84404089 has 16 divisors (see below), whose sum is σ = 109808640. Its totient is φ = 62908560.

The previous prime is 84404087. The next prime is 84404093. The reversal of 84404089 is 98040448.

It is not a de Polignac number, because 84404089 - 2¹ = 84404087 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 22059 + ... + 25600.

It is an arithmetic number, because the mean of its divisors is an integer number (6863040).

Almost surely, 2^84404089 is an apocalyptic number.

It is an amenable number.

84404089 is a deficient number, since it is larger than the sum of its proper divisors (25404551).

84404089 is a wasteful number, since it uses less digits than its factorization.

84404089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47700.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 84404089 is about 9187.1698035902. The cubic root of 84404089 is about 438.6530589418.

The spelling of 84404089 in words is "eighty-four million, four hundred four thousand, eighty-nine".