85944587 has 2 divisors, whose sum is σ = 85944588. Its totient is φ = 85944586.

The previous prime is 85944563. The next prime is 85944589. The reversal of 85944587 is 78544958.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85944587 is a prime.

Together with 85944589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85944589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42972293 + 42972294.

It is an arithmetic number, because the mean of its divisors is an integer number (42972294).

Almost surely, 2^85944587 is an apocalyptic number.

85944587 is a deficient number, since it is larger than the sum of its proper divisors (1).

85944587 is an equidigital number, since it uses as much as digits as its factorization.

85944587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 50.

The square root of 85944587 is about 9270.6303453433. The cubic root of 85944587 is about 441.3056722871.

The spelling of 85944587 in words is "eighty-five million, nine hundred forty-four thousand, five hundred eighty-seven".