84866447 has 4 divisors (see below), whose sum is σ = 85240536. Its totient is φ = 84492360.

The previous prime is 84866423. The next prime is 84866449. The reversal of 84866447 is 74466848.

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 84866447 - 2²² = 80672143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84866449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186704 + ... + 187157.

It is an arithmetic number, because the mean of its divisors is an integer number (21310134).

Almost surely, 2^84866447 is an apocalyptic number.

84866447 is a deficient number, since it is larger than the sum of its proper divisors (374089).

84866447 is a wasteful number, since it uses less digits than its factorization.

84866447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374088.

The product of its digits is 1032192, while the sum is 47.

The square root of 84866447 is about 9212.2986816538. The cubic root of 84866447 is about 439.4525681548.

The spelling of 84866447 in words is "eighty-four million, eight hundred sixty-six thousand, four hundred forty-seven".