84539291 has 4 divisors (see below), whose sum is σ = 84587784. Its totient is φ = 84490800.

The previous prime is 84539281. The next prime is 84539347. The reversal of 84539291 is 19293548.

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 84539291 - 2²² = 80344987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84539261) 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, 21530 + ... + 25151.

It is an arithmetic number, because the mean of its divisors is an integer number (21146946).

Almost surely, 2^84539291 is an apocalyptic number.

84539291 is a deficient number, since it is larger than the sum of its proper divisors (48493).

84539291 is a wasteful number, since it uses less digits than its factorization.

84539291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48492.

The product of its digits is 77760, while the sum is 41.

The square root of 84539291 is about 9194.5250557057. The cubic root of 84539291 is about 438.8871515987.

The spelling of 84539291 in words is "eighty-four million, five hundred thirty-nine thousand, two hundred ninety-one".