7945387 has 2 divisors, whose sum is σ = 7945388. Its totient is φ = 7945386.

The previous prime is 7945381. The next prime is 7945423. The reversal of 7945387 is 7835497.

It is a happy number.

7945387 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 (7835497) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7945387 is a prime.

It is not a weakly prime, because it can be changed into another prime (7945381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3972693 + 3972694.

It is an arithmetic number, because the mean of its divisors is an integer number (3972694).

Almost surely, 2^7945387 is an apocalyptic number.

7945387 is a deficient number, since it is larger than the sum of its proper divisors (1).

7945387 is an equidigital number, since it uses as much as digits as its factorization.

7945387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 7945387 is about 2818.7562860240. The cubic root of 7945387 is about 199.5438521031.

The spelling of 7945387 in words is "seven million, nine hundred forty-five thousand, three hundred eighty-seven".