3718397 has 2 divisors, whose sum is σ = 3718398. Its totient is φ = 3718396.

The previous prime is 3718381. The next prime is 3718411. The reversal of 3718397 is 7938173.

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., 2775556 + 942841 = 1666^2 + 971^2 .

It is an emirp because it is prime and its reverse (7938173) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3718397 - 2⁴ = 3718381 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3718397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3718307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1859198 + 1859199.

It is an arithmetic number, because the mean of its divisors is an integer number (1859199).

Almost surely, 2^3718397 is an apocalyptic number.

It is an amenable number.

3718397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3718397 is an equidigital number, since it uses as much as digits as its factorization.

3718397 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3718397 is about 1928.3145490298. The cubic root of 3718397 is about 154.9239585386.

The spelling of 3718397 in words is "three million, seven hundred eighteen thousand, three hundred ninety-seven".