84673279 has 4 divisors (see below), whose sum is σ = 86961784. Its totient is φ = 82384776.

The previous prime is 84673247. The next prime is 84673283. The reversal of 84673279 is 97237648.

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 84673279 - 2⁵ = 84673247 is a prime.

It is a super-2 number, since 2×84673279² = 14339128353223682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84673219) 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, 1144197 + ... + 1144270.

It is an arithmetic number, because the mean of its divisors is an integer number (21740446).

Almost surely, 2^84673279 is an apocalyptic number.

84673279 is a deficient number, since it is larger than the sum of its proper divisors (2288505).

84673279 is a wasteful number, since it uses less digits than its factorization.

84673279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2288504.

The product of its digits is 508032, while the sum is 46.

The square root of 84673279 is about 9201.8084635576. The cubic root of 84673279 is about 439.1188961950.

The spelling of 84673279 in words is "eighty-four million, six hundred seventy-three thousand, two hundred seventy-nine".