84237885 has 24 divisors (see below), whose sum is σ = 146333304. Its totient is φ = 44828160.

The previous prime is 84237833. The next prime is 84237893. The reversal of 84237885 is 58873248.

It can be written as a sum of positive squares in 4 ways, for example, as 1172889 + 83064996 = 1083^2 + 9114^2 .

It is not a de Polignac number, because 84237885 - 2¹³ = 84229693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 84237885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21649 + ... + 25241.

It is an arithmetic number, because the mean of its divisors is an integer number (6097221).

Almost surely, 2^84237885 is an apocalyptic number.

It is an amenable number.

84237885 is a deficient number, since it is larger than the sum of its proper divisors (62095419).

84237885 is a wasteful number, since it uses less digits than its factorization.

84237885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4125 (or 4122 counting only the distinct ones).

The product of its digits is 430080, while the sum is 45.

The square root of 84237885 is about 9178.1199055144. The cubic root of 84237885 is about 438.3649457299.

The spelling of 84237885 in words is "eighty-four million, two hundred thirty-seven thousand, eight hundred eighty-five".