85474943 has 2 divisors, whose sum is σ = 85474944. Its totient is φ = 85474942.

The previous prime is 85474933. The next prime is 85474973. The reversal of 85474943 is 34947458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85474943 - 2¹⁰ = 85473919 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 85474894 and 85474903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85474933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42737471 + 42737472.

It is an arithmetic number, because the mean of its divisors is an integer number (42737472).

Almost surely, 2^85474943 is an apocalyptic number.

85474943 is a deficient number, since it is larger than the sum of its proper divisors (1).

85474943 is an equidigital number, since it uses as much as digits as its factorization.

85474943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 85474943 is about 9245.2659777856. The cubic root of 85474943 is about 440.5003656884.

The spelling of 85474943 in words is "eighty-five million, four hundred seventy-four thousand, nine hundred forty-three".