84641451 has 4 divisors (see below), whose sum is σ = 112855272. Its totient is φ = 56427632.

The previous prime is 84641437. The next prime is 84641471. The reversal of 84641451 is 15414648.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84641451 - 2¹⁸ = 84379307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84641411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14106906 + ... + 14106911.

It is an arithmetic number, because the mean of its divisors is an integer number (28213818).

Almost surely, 2^84641451 is an apocalyptic number.

84641451 is a deficient number, since it is larger than the sum of its proper divisors (28213821).

84641451 is a wasteful number, since it uses less digits than its factorization.

84641451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28213820.

The product of its digits is 15360, while the sum is 33.

The square root of 84641451 is about 9200.0788583577. The cubic root of 84641451 is about 439.0638688871.

The spelling of 84641451 in words is "eighty-four million, six hundred forty-one thousand, four hundred fifty-one".