84412345 has 16 divisors (see below), whose sum is σ = 107000640. Its totient is φ = 63751104.

The previous prime is 84412343. The next prime is 84412357. The reversal of 84412345 is 54321448.

It is a cyclic number.

It is not a de Polignac number, because 84412345 - 2¹ = 84412343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84412343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28714 + ... + 31516.

It is an arithmetic number, because the mean of its divisors is an integer number (6687540).

Almost surely, 2^84412345 is an apocalyptic number.

It is an amenable number.

84412345 is a deficient number, since it is larger than the sum of its proper divisors (22588295).

84412345 is a wasteful number, since it uses less digits than its factorization.

84412345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3144.

The product of its digits is 15360, while the sum is 31.

The square root of 84412345 is about 9187.6191148741. The cubic root of 84412345 is about 438.6673607828.

The spelling of 84412345 in words is "eighty-four million, four hundred twelve thousand, three hundred forty-five".