85444311 has 32 divisors (see below), whose sum is σ = 124692480. Its totient is φ = 51861600.

The previous prime is 85444309. The next prime is 85444313. The reversal of 85444311 is 11344458.

It is an interprime number because it is at equal distance from previous prime (85444309) and next prime (85444313).

It is not a de Polignac number, because 85444311 - 2¹ = 85444309 is a prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85444313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173776 + ... + 174266.

It is an arithmetic number, because the mean of its divisors is an integer number (3896640).

Almost surely, 2^85444311 is an apocalyptic number.

85444311 is a deficient number, since it is larger than the sum of its proper divisors (39248169).

85444311 is a wasteful number, since it uses less digits than its factorization.

85444311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627.

The product of its digits is 7680, while the sum is 30.

The square root of 85444311 is about 9243.6091977106. The cubic root of 85444311 is about 440.4477381037.

Adding to 85444311 its reverse (11344458), we get a palindrome (96788769).

The spelling of 85444311 in words is "eighty-five million, four hundred forty-four thousand, three hundred eleven".