84369820 has 24 divisors (see below), whose sum is σ = 177980544. Its totient is φ = 33594816.

The previous prime is 84369811. The next prime is 84369829. The reversal of 84369820 is 2896348.

It is an interprime number because it is at equal distance from previous prime (84369811) and next prime (84369829).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84369829) 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, 4999 + ... + 13918.

It is an arithmetic number, because the mean of its divisors is an integer number (7415856).

Almost surely, 2^84369820 is an apocalyptic number.

It is an amenable number.

84369820 is an abundant number, since it is smaller than the sum of its proper divisors (93610724).

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

84369820 is a wasteful number, since it uses less digits than its factorization.

84369820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19149 (or 19147 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 84369820 is about 9185.3045676232. The cubic root of 84369820 is about 438.5936848968.

The spelling of 84369820 in words is "eighty-four million, three hundred sixty-nine thousand, eight hundred twenty".