85973689 has 4 divisors (see below), whose sum is σ = 90498640. Its totient is φ = 81448740.

The previous prime is 85973683. The next prime is 85973711. The reversal of 85973689 is 98637958.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85973689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85973683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2262447 + ... + 2262484.

It is an arithmetic number, because the mean of its divisors is an integer number (22624660).

Almost surely, 2^85973689 is an apocalyptic number.

It is an amenable number.

85973689 is a deficient number, since it is larger than the sum of its proper divisors (4524951).

85973689 is a wasteful number, since it uses less digits than its factorization.

85973689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524950.

The product of its digits is 3265920, while the sum is 55.

The square root of 85973689 is about 9272.1997929294. The cubic root of 85973689 is about 441.3554773565.

The spelling of 85973689 in words is "eighty-five million, nine hundred seventy-three thousand, six hundred eighty-nine".