84839497 has 4 divisors (see below), whose sum is σ = 84912516. Its totient is φ = 84766480.

The previous prime is 84839477. The next prime is 84839509. The reversal of 84839497 is 79493848.

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 65028096 + 19811401 = 8064^2 + 4451^2 .

It is a cyclic number.

It is not a de Polignac number, because 84839497 - 2¹¹ = 84837449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84839407) 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 3 ways as a sum of consecutive naturals, for example, 34738 + ... + 37099.

It is an arithmetic number, because the mean of its divisors is an integer number (21228129).

Almost surely, 2^84839497 is an apocalyptic number.

It is an amenable number.

84839497 is a deficient number, since it is larger than the sum of its proper divisors (73019).

84839497 is a wasteful number, since it uses less digits than its factorization.

84839497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73018.

The product of its digits is 1741824, while the sum is 52.

The square root of 84839497 is about 9210.8358469794. The cubic root of 84839497 is about 439.4060460369.

The spelling of 84839497 in words is "eighty-four million, eight hundred thirty-nine thousand, four hundred ninety-seven".