84091836 has 24 divisors (see below), whose sum is σ = 200390400. Its totient is φ = 27434032.

The previous prime is 84091831. The next prime is 84091849. The reversal of 84091836 is 63819048.

It is a junction number, because it is equal to n+sod(n) for n = 84091794 and 84091803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84091831) 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, 73986 + ... + 75113.

It is an arithmetic number, because the mean of its divisors is an integer number (8349600).

Almost surely, 2^84091836 is an apocalyptic number.

It is an amenable number.

84091836 is an abundant number, since it is smaller than the sum of its proper divisors (116298564).

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

84091836 is a wasteful number, since it uses less digits than its factorization.

84091836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149153 (or 149151 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 84091836 is about 9170.1600858436. The cubic root of 84091836 is about 438.1114580509. Note that the first 3 decimals are identical.

The spelling of 84091836 in words is "eighty-four million, ninety-one thousand, eight hundred thirty-six".