7397381 has 2 divisors, whose sum is σ = 7397382. Its totient is φ = 7397380.

The previous prime is 7397353. The next prime is 7397389. The reversal of 7397381 is 1837937.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6974881 + 422500 = 2641^2 + 650^2 .

It is an emirp because it is prime and its reverse (1837937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7397381 - 2¹⁸ = 7135237 is a prime.

It is a super-2 number, since 2×7397381² = 109442491318322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7397389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3698690 + 3698691.

It is an arithmetic number, because the mean of its divisors is an integer number (3698691).

Almost surely, 2^7397381 is an apocalyptic number.

It is an amenable number.

7397381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7397381 is an equidigital number, since it uses as much as digits as its factorization.

7397381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 38.

The square root of 7397381 is about 2719.8126773732. The cubic root of 7397381 is about 194.8465239887.

The spelling of 7397381 in words is "seven million, three hundred ninety-seven thousand, three hundred eighty-one".