84274459 has 4 divisors (see below), whose sum is σ = 84832720. Its totient is φ = 83716200.

The previous prime is 84274451. The next prime is 84274483. The reversal of 84274459 is 95447248.

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 84274459 - 2³ = 84274451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84274451) 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, 278904 + ... + 279205.

It is an arithmetic number, because the mean of its divisors is an integer number (21208180).

Almost surely, 2^84274459 is an apocalyptic number.

84274459 is a deficient number, since it is larger than the sum of its proper divisors (558261).

84274459 is a wasteful number, since it uses less digits than its factorization.

84274459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558260.

The product of its digits is 322560, while the sum is 43.

The square root of 84274459 is about 9180.1121452845. The cubic root of 84274459 is about 438.4283789454.

The spelling of 84274459 in words is "eighty-four million, two hundred seventy-four thousand, four hundred fifty-nine".