4391304397 has 2 divisors, whose sum is σ = 4391304398. Its totient is φ = 4391304396.

The previous prime is 4391304389. The next prime is 4391304403. The reversal of 4391304397 is 7934031934.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4246607556 + 144696841 = 65166^2 + 12029^2 .

It is a cyclic number.

It is not a de Polignac number, because 4391304397 - 2³ = 4391304389 is a prime.

It is a super-2 number, since 2×4391304397² = 38567108614223067218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4391304367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2195652198 + 2195652199.

It is an arithmetic number, because the mean of its divisors is an integer number (2195652199).

Almost surely, 2^4391304397 is an apocalyptic number.

It is an amenable number.

4391304397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4391304397 is an equidigital number, since it uses as much as digits as its factorization.

4391304397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 4391304397 is about 66266.9178172638. The cubic root of 4391304397 is about 1637.5623607508.

The spelling of 4391304397 in words is "four billion, three hundred ninety-one million, three hundred four thousand, three hundred ninety-seven".