7959881 has 4 divisors (see below), whose sum is σ = 8072064. Its totient is φ = 7847700.

The previous prime is 7959871. The next prime is 7959883. The reversal of 7959881 is 1889597.

It is a happy number.

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: 1889597 = 61 ⋅30977.

It is a cyclic number.

It is not a de Polignac number, because 7959881 - 2¹⁰ = 7958857 is a prime.

It is a super-2 number, since 2×7959881² = 126719411068322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7959883) 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, 55985 + ... + 56126.

It is an arithmetic number, because the mean of its divisors is an integer number (2018016).

Almost surely, 2^7959881 is an apocalyptic number.

7959881 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

7959881 is a deficient number, since it is larger than the sum of its proper divisors (112183).

7959881 is a wasteful number, since it uses less digits than its factorization.

7959881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112182.

The product of its digits is 181440, while the sum is 47.

The square root of 7959881 is about 2821.3261066385. The cubic root of 7959881 is about 199.6651145717.

The spelling of 7959881 in words is "seven million, nine hundred fifty-nine thousand, eight hundred eighty-one".