7085989 has 4 divisors (see below), whose sum is σ = 7258860. Its totient is φ = 6913120.

The previous prime is 7085983. The next prime is 7085999. The reversal of 7085989 is 9895807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9895807 = 73 ⋅135559.

It can be written as a sum of positive squares in 2 ways, for example, as 195364 + 6890625 = 442^2 + 2625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7085989 is a prime.

It is a super-2 number, since 2×7085989² = 100422480216242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7085983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86374 + ... + 86455.

It is an arithmetic number, because the mean of its divisors is an integer number (1814715).

Almost surely, 2^7085989 is an apocalyptic number.

It is an amenable number.

7085989 is a deficient number, since it is larger than the sum of its proper divisors (172871).

7085989 is a wasteful number, since it uses less digits than its factorization.

7085989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172870.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 7085989 is about 2661.9521032505. The cubic root of 7085989 is about 192.0732233009.

The spelling of 7085989 in words is "seven million, eighty-five thousand, nine hundred eighty-nine".