84615089 has 18 divisors (see below), whose sum is σ = 94857318. Its totient is φ = 75441600.

The previous prime is 84615079. The next prime is 84615119. The reversal of 84615089 is 98051648.

It can be written as a sum of positive squares in 3 ways, for example, as 984064 + 83631025 = 992^2 + 9145^2 .

It is not a de Polignac number, because 84615089 - 2²⁰ = 83566513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84615029) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 162149 + ... + 162669.

It is an arithmetic number, because the mean of its divisors is an integer number (5269851).

Almost surely, 2^84615089 is an apocalyptic number.

It is an amenable number.

84615089 is a deficient number, since it is larger than the sum of its proper divisors (10242229).

84615089 is a wasteful number, since it uses less digits than its factorization.

84615089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 84615089 is about 9198.6460416737. The cubic root of 84615089 is about 439.0182812803.

The spelling of 84615089 in words is "eighty-four million, six hundred fifteen thousand, eighty-nine".