7887913 has 16 divisors (see below), whose sum is σ = 9043200. Its totient is φ = 6814080.

The previous prime is 7887889. The next prime is 7887923. The reversal of 7887913 is 3197887.

It is a cyclic number.

It is not a de Polignac number, because 7887913 - 2¹⁷ = 7756841 is a prime.

It is a Duffinian number.

Its product of digits (84672) is a multiple of the sum of its prime divisors (432).

It is a self number, because there is not a number n which added to its sum of digits gives 7887913.

It is not an unprimeable number, because it can be changed into a prime (7887923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25045 + ... + 25357.

It is an arithmetic number, because the mean of its divisors is an integer number (565200).

Almost surely, 2^7887913 is an apocalyptic number.

It is an amenable number.

7887913 is a deficient number, since it is larger than the sum of its proper divisors (1155287).

7887913 is a wasteful number, since it uses less digits than its factorization.

7887913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432.

The product of its digits is 84672, while the sum is 43.

The square root of 7887913 is about 2808.5428606308. The cubic root of 7887913 is about 199.0615450658.

The spelling of 7887913 in words is "seven million, eight hundred eighty-seven thousand, nine hundred thirteen".