85965959 has 4 divisors (see below), whose sum is σ = 86852304. Its totient is φ = 85079616.

The previous prime is 85965953. The next prime is 85965977. The reversal of 85965959 is 95956958.

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 85965959 - 2⁸ = 85965703 is a prime.

It is a super-2 number, since 2×85965959² = 14780292213579362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85965953) 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, 443027 + ... + 443220.

It is an arithmetic number, because the mean of its divisors is an integer number (21713076).

Almost surely, 2^85965959 is an apocalyptic number.

85965959 is a deficient number, since it is larger than the sum of its proper divisors (886345).

85965959 is an equidigital number, since it uses as much as digits as its factorization.

85965959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886344.

The product of its digits is 4374000, while the sum is 56.

The square root of 85965959 is about 9271.7829461221. The cubic root of 85965959 is about 441.3422493556.

Subtracting 85965959 from its reverse (95956958), we obtain a palindrome (9990999).

The spelling of 85965959 in words is "eighty-five million, nine hundred sixty-five thousand, nine hundred fifty-nine".