85934431 has 4 divisors (see below), whose sum is σ = 93746664. Its totient is φ = 78122200.

The previous prime is 85934419. The next prime is 85934447. The reversal of 85934431 is 13443958.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85934431 - 2⁵ = 85934399 is a prime.

It is a super-2 number, since 2×85934431² = 14769452862587522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85934411) 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, 3906100 + ... + 3906121.

It is an arithmetic number, because the mean of its divisors is an integer number (23436666).

Almost surely, 2^85934431 is an apocalyptic number.

85934431 is a deficient number, since it is larger than the sum of its proper divisors (7812233).

85934431 is a wasteful number, since it uses less digits than its factorization.

85934431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7812232.

The product of its digits is 51840, while the sum is 37.

The square root of 85934431 is about 9270.0825778415. The cubic root of 85934431 is about 441.2882886949.

The spelling of 85934431 in words is "eighty-five million, nine hundred thirty-four thousand, four hundred thirty-one".