3915397 has 2 divisors, whose sum is σ = 3915398. Its totient is φ = 3915396.

The previous prime is 3915371. The next prime is 3915403. The reversal of 3915397 is 7935193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2149156 + 1766241 = 1466^2 + 1329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3915397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3915697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957698 + 1957699.

It is an arithmetic number, because the mean of its divisors is an integer number (1957699).

Almost surely, 2^3915397 is an apocalyptic number.

It is an amenable number.

3915397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3915397 is an equidigital number, since it uses as much as digits as its factorization.

3915397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25515, while the sum is 37.

The square root of 3915397 is about 1978.7362128389. The cubic root of 3915397 is about 157.6129633878.

The spelling of 3915397 in words is "three million, nine hundred fifteen thousand, three hundred ninety-seven".