84312906 has 16 divisors (see below), whose sum is σ = 168822624. Its totient is φ = 28071504.

The previous prime is 84312869. The next prime is 84312929. The reversal of 84312906 is 60921348.

It is a super-2 number, since 2×84312906² = 14217332236329672, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2305 + ... + 13188.

It is an arithmetic number, because the mean of its divisors is an integer number (10551414).

Almost surely, 2^84312906 is an apocalyptic number.

84312906 is an abundant number, since it is smaller than the sum of its proper divisors (84509718).

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

84312906 is a wasteful number, since it uses less digits than its factorization.

84312906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16405.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 84312906 is about 9182.2059441073. The cubic root of 84312906 is about 438.4950408712.

The spelling of 84312906 in words is "eighty-four million, three hundred twelve thousand, nine hundred six".