4004448397 has 2 divisors, whose sum is σ = 4004448398. Its totient is φ = 4004448396.

The previous prime is 4004448377. The next prime is 4004448403. The reversal of 4004448397 is 7938444004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3996641961 + 7806436 = 63219^2 + 2794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4004448397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4004448377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2002224198 + 2002224199.

It is an arithmetic number, because the mean of its divisors is an integer number (2002224199).

Almost surely, 2^4004448397 is an apocalyptic number.

It is an amenable number.

4004448397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4004448397 is an equidigital number, since it uses as much as digits as its factorization.

4004448397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 4004448397 is about 63280.7110974584. The cubic root of 4004448397 is about 1587.9892831380.

The spelling of 4004448397 in words is "four billion, four million, four hundred forty-eight thousand, three hundred ninety-seven".