85539943 has 8 divisors (see below), whose sum is σ = 90354176. Its totient is φ = 80854200.

The previous prime is 85539941. The next prime is 85539959. The reversal of 85539943 is 34993558.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85539943 - 2¹ = 85539941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85539893 and 85539902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85539941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30753 + ... + 33418.

It is an arithmetic number, because the mean of its divisors is an integer number (11294272).

Almost surely, 2^85539943 is an apocalyptic number.

85539943 is a deficient number, since it is larger than the sum of its proper divisors (4814233).

85539943 is a wasteful number, since it uses less digits than its factorization.

85539943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64245.

The product of its digits is 583200, while the sum is 46.

The square root of 85539943 is about 9248.7806223307. The cubic root of 85539943 is about 440.6119978927.

It can be divided in two parts, 8553 and 9943, that added together give a square (18496 = 136²).

The spelling of 85539943 in words is "eighty-five million, five hundred thirty-nine thousand, nine hundred forty-three".