84245843 has 4 divisors (see below), whose sum is σ = 91904568. Its totient is φ = 76587120.

The previous prime is 84245839. The next prime is 84245873. The reversal of 84245843 is 34854248.

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 84245843 - 2² = 84245839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84245797 and 84245806.

It is not an unprimeable number, because it can be changed into a prime (84245873) 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, 3829346 + ... + 3829367.

It is an arithmetic number, because the mean of its divisors is an integer number (22976142).

Almost surely, 2^84245843 is an apocalyptic number.

84245843 is a deficient number, since it is larger than the sum of its proper divisors (7658725).

84245843 is a wasteful number, since it uses less digits than its factorization.

84245843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7658724.

The product of its digits is 122880, while the sum is 38.

The square root of 84245843 is about 9178.5534263303. The cubic root of 84245843 is about 438.3787494889.

The spelling of 84245843 in words is "eighty-four million, two hundred forty-five thousand, eight hundred forty-three".