3918797 has 2 divisors, whose sum is σ = 3918798. Its totient is φ = 3918796.

The previous prime is 3918793. The next prime is 3918829. The reversal of 3918797 is 7978193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2328676 + 1590121 = 1526^2 + 1261^2 .

It is an emirp because it is prime and its reverse (7978193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3918797 - 2² = 3918793 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3918793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1959398 + 1959399.

It is an arithmetic number, because the mean of its divisors is an integer number (1959399).

Almost surely, 2^3918797 is an apocalyptic number.

It is an amenable number.

3918797 is a deficient number, since it is larger than the sum of its proper divisors (1).

3918797 is an equidigital number, since it uses as much as digits as its factorization.

3918797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 44.

The square root of 3918797 is about 1979.5951606326. The cubic root of 3918797 is about 157.6585721333.

The spelling of 3918797 in words is "three million, nine hundred eighteen thousand, seven hundred ninety-seven".