85923539 has 4 divisors (see below), whose sum is σ = 92533056. Its totient is φ = 79314024.

The previous prime is 85923533. The next prime is 85923553. The reversal of 85923539 is 93532958.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93532958 = 2 ⋅46766479.

It is a cyclic number.

It is not a de Polignac number, because 85923539 - 2²⁰ = 84874963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85923539.

It is not an unprimeable number, because it can be changed into a prime (85923533) 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, 3304739 + ... + 3304764.

It is an arithmetic number, because the mean of its divisors is an integer number (23133264).

Almost surely, 2^85923539 is an apocalyptic number.

85923539 is a deficient number, since it is larger than the sum of its proper divisors (6609517).

85923539 is a wasteful number, since it uses less digits than its factorization.

85923539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6609516.

The product of its digits is 291600, while the sum is 44.

The square root of 85923539 is about 9269.4950779425. The cubic root of 85923539 is about 441.2696438007.

The spelling of 85923539 in words is "eighty-five million, nine hundred twenty-three thousand, five hundred thirty-nine".