7893985 has 8 divisors (see below), whose sum is σ = 10334016. Its totient is φ = 5741040.

The previous prime is 7893943. The next prime is 7893989. The reversal of 7893985 is 5893987.

7893985 = 473² + 474² + ... + 505².

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

It is not a de Polignac number, because 7893985 - 2¹⁷ = 7762913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7893989) 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 7 ways as a sum of consecutive naturals, for example, 71709 + ... + 71818.

It is an arithmetic number, because the mean of its divisors is an integer number (1291752).

Almost surely, 2^7893985 is an apocalyptic number.

It is an amenable number.

7893985 is a deficient number, since it is larger than the sum of its proper divisors (2440031).

7893985 is a wasteful number, since it uses less digits than its factorization.

7893985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143543.

The product of its digits is 544320, while the sum is 49.

The square root of 7893985 is about 2809.6236402764. The cubic root of 7893985 is about 199.1126101865.

It can be divided in two parts, 789 and 3985, that added together give a palindrome (4774).

The spelling of 7893985 in words is "seven million, eight hundred ninety-three thousand, nine hundred eighty-five".