85402843 has 2 divisors, whose sum is σ = 85402844. Its totient is φ = 85402842.

The previous prime is 85402831. The next prime is 85402897. The reversal of 85402843 is 34820458.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85402843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85402799 and 85402808.

It is not a weakly prime, because it can be changed into another prime (85402813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42701421 + 42701422.

It is an arithmetic number, because the mean of its divisors is an integer number (42701422).

Almost surely, 2^85402843 is an apocalyptic number.

85402843 is a deficient number, since it is larger than the sum of its proper divisors (1).

85402843 is an equidigital number, since it uses as much as digits as its factorization.

85402843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 85402843 is about 9241.3658622522. The cubic root of 85402843 is about 440.3764735880.

The spelling of 85402843 in words is "eighty-five million, four hundred two thousand, eight hundred forty-three".