85398743 has 4 divisors (see below), whose sum is σ = 85451640. Its totient is φ = 85345848.

The previous prime is 85398739. The next prime is 85398751. The reversal of 85398743 is 34789358.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34789358 = 2 ⋅17394679.

It is a cyclic number.

It is not a de Polignac number, because 85398743 - 2² = 85398739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85398713) 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, 23948 + ... + 27281.

It is an arithmetic number, because the mean of its divisors is an integer number (21362910).

Almost surely, 2^85398743 is an apocalyptic number.

85398743 is a deficient number, since it is larger than the sum of its proper divisors (52897).

85398743 is a wasteful number, since it uses less digits than its factorization.

85398743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52896.

The product of its digits is 725760, while the sum is 47.

The square root of 85398743 is about 9241.1440309087. The cubic root of 85398743 is about 440.3694263112.

The spelling of 85398743 in words is "eighty-five million, three hundred ninety-eight thousand, seven hundred forty-three".