7893913 has 4 divisors (see below), whose sum is σ = 8107300. Its totient is φ = 7680528.

The previous prime is 7893883. The next prime is 7893943. The reversal of 7893913 is 3193987.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3193987 = 23 ⋅138869.

It is an interprime number because it is at equal distance from previous prime (7893883) and next prime (7893943).

It can be written as a sum of positive squares in 2 ways, for example, as 2862864 + 5031049 = 1692^2 + 2243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7893913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7893943) 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 3 ways as a sum of consecutive naturals, for example, 106638 + ... + 106711.

It is an arithmetic number, because the mean of its divisors is an integer number (2026825).

Almost surely, 2^7893913 is an apocalyptic number.

It is an amenable number.

7893913 is a deficient number, since it is larger than the sum of its proper divisors (213387).

7893913 is a wasteful number, since it uses less digits than its factorization.

7893913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213386.

The product of its digits is 40824, while the sum is 40.

The square root of 7893913 is about 2809.6108271431. The cubic root of 7893913 is about 199.1120048246.

The spelling of 7893913 in words is "seven million, eight hundred ninety-three thousand, nine hundred thirteen".