84989417 has 4 divisors (see below), whose sum is σ = 85296516. Its totient is φ = 84682320.

The previous prime is 84989389. The next prime is 84989431. The reversal of 84989417 is 71498948.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35652841 + 49336576 = 5971^2 + 7024^2 .

It is a cyclic number.

It is not a de Polignac number, because 84989417 - 2¹² = 84985321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84989467) 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, 153134 + ... + 153687.

It is an arithmetic number, because the mean of its divisors is an integer number (21324129).

Almost surely, 2^84989417 is an apocalyptic number.

It is an amenable number.

84989417 is a deficient number, since it is larger than the sum of its proper divisors (307099).

84989417 is a wasteful number, since it uses less digits than its factorization.

84989417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307098.

The product of its digits is 580608, while the sum is 50.

The square root of 84989417 is about 9218.9704956682. The cubic root of 84989417 is about 439.6647187532.

It can be divided in two parts, 8498941 and 7, that added together give a palindrome (8498948).

The spelling of 84989417 in words is "eighty-four million, nine hundred eighty-nine thousand, four hundred seventeen".