7893881 has 4 divisors (see below), whose sum is σ = 7989072. Its totient is φ = 7798692.

The previous prime is 7893863. The next prime is 7893883. The reversal of 7893881 is 1883987.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1883987 = 7 ⋅269141.

It is a cyclic number.

It is not a de Polignac number, because 7893881 - 2¹⁸ = 7631737 is a prime.

It is a super-2 number, since 2×7893881² = 124626714484322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7893883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47471 + ... + 47636.

It is an arithmetic number, because the mean of its divisors is an integer number (1997268).

Almost surely, 2^7893881 is an apocalyptic number.

It is an amenable number.

7893881 is a deficient number, since it is larger than the sum of its proper divisors (95191).

7893881 is an equidigital number, since it uses as much as digits as its factorization.

7893881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95190.

The product of its digits is 96768, while the sum is 44.

The square root of 7893881 is about 2809.6051323985. The cubic root of 7893881 is about 199.1117357738. Note that the first 3 decimals are identical.

The spelling of 7893881 in words is "seven million, eight hundred ninety-three thousand, eight hundred eighty-one".