84001089 has 4 divisors (see below), whose sum is σ = 112001456. Its totient is φ = 56000724.

The previous prime is 84001061. The next prime is 84001111. The reversal of 84001089 is 98010048.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 84001089 - 2¹³ = 83992897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84001009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14000179 + ... + 14000184.

It is an arithmetic number, because the mean of its divisors is an integer number (28000364).

Almost surely, 2^84001089 is an apocalyptic number.

It is an amenable number.

84001089 is a deficient number, since it is larger than the sum of its proper divisors (28000367).

84001089 is a wasteful number, since it uses less digits than its factorization.

84001089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28000366.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 84001089 is about 9165.2107995397. The cubic root of 84001089 is about 437.9538065585.

The spelling of 84001089 in words is "eighty-four million, one thousand, eighty-nine".