7923881 has 8 divisors (see below), whose sum is σ = 9085440. Its totient is φ = 6769728.

The previous prime is 7923869. The next prime is 7923907. The reversal of 7923881 is 1883297.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-7923881 is a prime.

It is a super-2 number, since 2×7923881² = 125575780204322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7923281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 680 + ... + 4038.

It is an arithmetic number, because the mean of its divisors is an integer number (1135680).

Almost surely, 2^7923881 is an apocalyptic number.

It is an amenable number.

7923881 is a deficient number, since it is larger than the sum of its proper divisors (1161559).

7923881 is a wasteful number, since it uses less digits than its factorization.

7923881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3703.

The product of its digits is 24192, while the sum is 38.

The square root of 7923881 is about 2814.9388980935. The cubic root of 7923881 is about 199.3636524564.

The spelling of 7923881 in words is "seven million, nine hundred twenty-three thousand, eight hundred eighty-one".