7481939 has 2 divisors, whose sum is σ = 7481940. Its totient is φ = 7481938.

The previous prime is 7481933. The next prime is 7481983. The reversal of 7481939 is 9391847.

It is a happy number.

7481939 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (9391847) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7481939 is a prime.

It is a super-2 number, since 2×7481939² = 111958822399442, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7481896 and 7481905.

It is not a weakly prime, because it can be changed into another prime (7481933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3740969 + 3740970.

It is an arithmetic number, because the mean of its divisors is an integer number (3740970).

Almost surely, 2^7481939 is an apocalyptic number.

7481939 is a deficient number, since it is larger than the sum of its proper divisors (1).

7481939 is an equidigital number, since it uses as much as digits as its factorization.

7481939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 7481939 is about 2735.3133275733. The cubic root of 7481939 is about 195.5861303754.

The spelling of 7481939 in words is "seven million, four hundred eighty-one thousand, nine hundred thirty-nine".