84820943 has 4 divisors (see below), whose sum is σ = 84914160. Its totient is φ = 84727728.

The previous prime is 84820907. The next prime is 84820961. The reversal of 84820943 is 34902848.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84820943 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84820897 and 84820906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84820903) 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, 45230 + ... + 47067.

It is an arithmetic number, because the mean of its divisors is an integer number (21228540).

Almost surely, 2^84820943 is an apocalyptic number.

84820943 is a deficient number, since it is larger than the sum of its proper divisors (93217).

84820943 is an equidigital number, since it uses as much as digits as its factorization.

84820943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93216.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 84820943 is about 9209.8286086116. The cubic root of 84820943 is about 439.3740116878.

The spelling of 84820943 in words is "eighty-four million, eight hundred twenty thousand, nine hundred forty-three".