7969985 has 16 divisors (see below), whose sum is σ = 9984576. Its totient is φ = 6101568.

The previous prime is 7969979. The next prime is 7969993. The reversal of 7969985 is 5899697.

It is a cyclic number.

It is not a de Polignac number, because 7969985 - 2⁸ = 7969729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12074 + ... + 12716.

It is an arithmetic number, because the mean of its divisors is an integer number (624036).

Almost surely, 2^7969985 is an apocalyptic number.

It is an amenable number.

7969985 is a deficient number, since it is larger than the sum of its proper divisors (2014591).

7969985 is a wasteful number, since it uses less digits than its factorization.

7969985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752.

The product of its digits is 1224720, while the sum is 53.

The square root of 7969985 is about 2823.1161860611. The cubic root of 7969985 is about 199.7495615338.

The spelling of 7969985 in words is "seven million, nine hundred sixty-nine thousand, nine hundred eighty-five".