84272291 has 4 divisors (see below), whose sum is σ = 86990784. Its totient is φ = 81553800.

The previous prime is 84272267. The next prime is 84272297. The reversal of 84272291 is 19227248.

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 84272291 - 2¹⁰ = 84271267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84272297) 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, 1359200 + ... + 1359261.

It is an arithmetic number, because the mean of its divisors is an integer number (21747696).

Almost surely, 2^84272291 is an apocalyptic number.

84272291 is a deficient number, since it is larger than the sum of its proper divisors (2718493).

84272291 is a wasteful number, since it uses less digits than its factorization.

84272291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2718492.

The product of its digits is 16128, while the sum is 35.

The square root of 84272291 is about 9179.9940631789. The cubic root of 84272291 is about 438.4246193212.

The spelling of 84272291 in words is "eighty-four million, two hundred seventy-two thousand, two hundred ninety-one".