7943481 has 64 divisors (see below), whose sum is σ = 14999040. Its totient is φ = 4043520.

The previous prime is 7943473. The next prime is 7943489. The reversal of 7943481 is 1843497.

It is a happy number.

7943481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7943473) and next prime (7943489).

It is not a de Polignac number, because 7943481 - 2³ = 7943473 is a prime.

It is a super-2 number, since 2×7943481² = 126197780794722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7943489) 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 63 ways as a sum of consecutive naturals, for example, 130191 + ... + 130251.

It is an arithmetic number, because the mean of its divisors is an integer number (234360).

Almost surely, 2^7943481 is an apocalyptic number.

It is an amenable number.

7943481 is a deficient number, since it is larger than the sum of its proper divisors (7055559).

7943481 is a wasteful number, since it uses less digits than its factorization.

7943481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 137 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 7943481 is about 2818.4181733731. The cubic root of 7943481 is about 199.5278947936.

The spelling of 7943481 in words is "seven million, nine hundred forty-three thousand, four hundred eighty-one".