3109397 has 2 divisors, whose sum is σ = 3109398. Its totient is φ = 3109396.

The previous prime is 3109391. The next prime is 3109411. The reversal of 3109397 is 7939013.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2979076 + 130321 = 1726^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 3109397 - 2⁶ = 3109333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3109391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1554698 + 1554699.

It is an arithmetic number, because the mean of its divisors is an integer number (1554699).

Almost surely, 2^3109397 is an apocalyptic number.

It is an amenable number.

3109397 is a deficient number, since it is larger than the sum of its proper divisors (1).

3109397 is an equidigital number, since it uses as much as digits as its factorization.

3109397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 3109397 is about 1763.3482356018. The cubic root of 3109397 is about 145.9571557527.

The spelling of 3109397 in words is "three million, one hundred nine thousand, three hundred ninety-seven".