84406212 has 90 divisors (see below), whose sum is σ = 242650254. Its totient is φ = 25565760.

The previous prime is 84406193. The next prime is 84406237. The reversal of 84406212 is 21260448.

84406212 is a `hidden beast` number, since 8 + 440 + 6 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53670276 + 30735936 = 7326^2 + 5544^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 38128 + ... + 40280.

Almost surely, 2^84406212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84406212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121325127).

84406212 is an abundant number, since it is smaller than the sum of its proper divisors (158244042).

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

84406212 is a wasteful number, since it uses less digits than its factorization.

84406212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191 (or 2169 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 84406212 is about 9187.2853444312. The cubic root of 84406212 is about 438.6567366966.

The spelling of 84406212 in words is "eighty-four million, four hundred six thousand, two hundred twelve".