7849864 has 16 divisors (see below), whose sum is σ = 16056720. Its totient is φ = 3568080.

The previous prime is 7849847. The next prime is 7849879. The reversal of 7849864 is 4689487.

It is a happy number.

It is an unprimeable number.

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, 44514 + ... + 44689.

It is an arithmetic number, because the mean of its divisors is an integer number (1003545).

Almost surely, 2^7849864 is an apocalyptic number.

It is an amenable number.

7849864 is an abundant number, since it is smaller than the sum of its proper divisors (8206856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7849864 is a wasteful number, since it uses less digits than its factorization.

7849864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89220 (or 89216 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 7849864 is about 2801.7608748785. The cubic root of 7849864 is about 198.7409573566.

It can be divided in two parts, 784 and 9864, that added together give a cube (10648 = 22³).

The spelling of 7849864 in words is "seven million, eight hundred forty-nine thousand, eight hundred sixty-four".