85845921 has 8 divisors (see below), whose sum is σ = 130812864. Its totient is φ = 49054800.

The previous prime is 85845911. The next prime is 85845943. The reversal of 85845921 is 12954858.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85845921 - 2⁵ = 85845889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85845911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2043930 + ... + 2043971.

It is an arithmetic number, because the mean of its divisors is an integer number (16351608).

Almost surely, 2^85845921 is an apocalyptic number.

It is an amenable number.

85845921 is a deficient number, since it is larger than the sum of its proper divisors (44966943).

85845921 is a wasteful number, since it uses less digits than its factorization.

85845921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087911.

The product of its digits is 115200, while the sum is 42.

The square root of 85845921 is about 9265.3073883169. The cubic root of 85845921 is about 441.1367318884.

The spelling of 85845921 in words is "eighty-five million, eight hundred forty-five thousand, nine hundred twenty-one".