85407843 has 16 divisors (see below), whose sum is σ = 115466400. Its totient is φ = 56150016.

The previous prime is 85407823. The next prime is 85407859. The reversal of 85407843 is 34870458.

It is not a de Polignac number, because 85407843 - 2¹³ = 85399651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85407823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69571 + ... + 70787.

It is an arithmetic number, because the mean of its divisors is an integer number (7216650).

Almost surely, 2^85407843 is an apocalyptic number.

85407843 is a deficient number, since it is larger than the sum of its proper divisors (30058557).

85407843 is a wasteful number, since it uses less digits than its factorization.

85407843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1526.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 85407843 is about 9241.6363810745. The cubic root of 85407843 is about 440.3850675228.

The spelling of 85407843 in words is "eighty-five million, four hundred seven thousand, eight hundred forty-three".