85439963 has 16 divisors (see below), whose sum is σ = 102176256. Its totient is φ = 69854400.

The previous prime is 85439933. The next prime is 85439969. The reversal of 85439963 is 36993458.

It is not a de Polignac number, because 85439963 - 2⁶ = 85439899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85439969) 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 15 ways as a sum of consecutive naturals, for example, 96320 + ... + 97202.

It is an arithmetic number, because the mean of its divisors is an integer number (6386016).

Almost surely, 2^85439963 is an apocalyptic number.

85439963 is a deficient number, since it is larger than the sum of its proper divisors (16736293).

85439963 is a wasteful number, since it uses less digits than its factorization.

85439963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514.

The product of its digits is 699840, while the sum is 47.

The square root of 85439963 is about 9243.3740051996. The cubic root of 85439963 is about 440.4402669636.

The spelling of 85439963 in words is "eighty-five million, four hundred thirty-nine thousand, nine hundred sixty-three".