9071985 has 16 divisors (see below), whose sum is σ = 15632064. Its totient is φ = 4466112.

The previous prime is 9071977. The next prime is 9071989. The reversal of 9071985 is 5891709.

It is a happy number.

9071985 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9071985 - 2³ = 9071977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9071989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23067 + ... + 23456.

It is an arithmetic number, because the mean of its divisors is an integer number (977004).

Almost surely, 2^9071985 is an apocalyptic number.

It is an amenable number.

9071985 is a deficient number, since it is larger than the sum of its proper divisors (6560079).

9071985 is a wasteful number, since it uses less digits than its factorization.

9071985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46544.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 9071985 is about 3011.9736054620. The cubic root of 9071985 is about 208.5614837452.

The spelling of 9071985 in words is "nine million, seventy-one thousand, nine hundred eighty-five".