7381949 has 2 divisors, whose sum is σ = 7381950. Its totient is φ = 7381948.

The previous prime is 7381943. The next prime is 7381963. The reversal of 7381949 is 9491837.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5152900 + 2229049 = 2270^2 + 1493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7381949 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7381943) 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 as a sum of consecutive naturals, namely, 3690974 + 3690975.

It is an arithmetic number, because the mean of its divisors is an integer number (3690975).

Almost surely, 2^7381949 is an apocalyptic number.

It is an amenable number.

7381949 is a deficient number, since it is larger than the sum of its proper divisors (1).

7381949 is an equidigital number, since it uses as much as digits as its factorization.

7381949 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 7381949 is about 2716.9742361679. The cubic root of 7381949 is about 194.7109370421.

The spelling of 7381949 in words is "seven million, three hundred eighty-one thousand, nine hundred forty-nine".