84708491 has 8 divisors (see below), whose sum is σ = 96958944. Its totient is φ = 72495360.

The previous prime is 84708487. The next prime is 84708497. The reversal of 84708491 is 19480748.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84708491 - 2² = 84708487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84708497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4280 + ... + 13701.

It is an arithmetic number, because the mean of its divisors is an integer number (12119868).

Almost surely, 2^84708491 is an apocalyptic number.

84708491 is a deficient number, since it is larger than the sum of its proper divisors (12250453).

84708491 is a wasteful number, since it uses less digits than its factorization.

84708491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18661.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 84708491 is about 9203.7215842288. The cubic root of 84708491 is about 439.1797580233.

It can be divided in two parts, 8470 and 8491, that added together give a palindrome (16961).

The spelling of 84708491 in words is "eighty-four million, seven hundred eight thousand, four hundred ninety-one".