84243771 has 12 divisors (see below), whose sum is σ = 125611200. Its totient is φ = 54350640.

The previous prime is 84243769. The next prime is 84243773. The reversal of 84243771 is 17734248.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84243769) and next prime (84243773).

It is not a de Polignac number, because 84243771 - 2¹ = 84243769 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84243773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150696 + ... + 151253.

It is an arithmetic number, because the mean of its divisors is an integer number (10467600).

Almost surely, 2^84243771 is an apocalyptic number.

84243771 is a deficient number, since it is larger than the sum of its proper divisors (41367429).

84243771 is a wasteful number, since it uses less digits than its factorization.

84243771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301986 (or 301983 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 84243771 is about 9178.4405538196. The cubic root of 84243771 is about 438.3751555303.

The spelling of 84243771 in words is "eighty-four million, two hundred forty-three thousand, seven hundred seventy-one".