7945985 has 8 divisors (see below), whose sum is σ = 9550440. Its totient is φ = 6346624.

The previous prime is 7945981. The next prime is 7946023. The reversal of 7945985 is 5895497.

It can be written as a sum of positive squares in 4 ways, for example, as 234256 + 7711729 = 484^2 + 2777^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7945985 - 2² = 7945981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7945981) 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, 4829 + ... + 6261.

It is an arithmetic number, because the mean of its divisors is an integer number (1193805).

Almost surely, 2^7945985 is an apocalyptic number.

It is an amenable number.

7945985 is a deficient number, since it is larger than the sum of its proper divisors (1604455).

7945985 is a wasteful number, since it uses less digits than its factorization.

7945985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547.

The product of its digits is 453600, while the sum is 47.

The square root of 7945985 is about 2818.8623591797. The cubic root of 7945985 is about 199.5488581202.

It can be divided in two parts, 79 and 45985, that added together give a palindrome (46064).

The spelling of 7945985 in words is "seven million, nine hundred forty-five thousand, nine hundred eighty-five".