85943109 has 40 divisors (see below), whose sum is σ = 141985600. Its totient is φ = 46221504.

The previous prime is 85943107. The next prime is 85943141. The reversal of 85943109 is 90134958.

It is not a de Polignac number, because 85943109 - 2¹ = 85943107 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 (85943107) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5055469 + ... + 5055485.

It is an arithmetic number, because the mean of its divisors is an integer number (3549640).

Almost surely, 2^85943109 is an apocalyptic number.

It is an amenable number.

85943109 is a deficient number, since it is larger than the sum of its proper divisors (56042491).

85943109 is an frugal number, since it uses more digits than its factorization.

85943109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 85943109 is about 9270.5506308957. The cubic root of 85943109 is about 441.3031425427.

The spelling of 85943109 in words is "eighty-five million, nine hundred forty-three thousand, one hundred nine".