4008397 has 2 divisors, whose sum is σ = 4008398. Its totient is φ = 4008396.

The previous prime is 4008391. The next prime is 4008421. The reversal of 4008397 is 7938004.

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., 2996361 + 1012036 = 1731^2 + 1006^2 .

It is a cyclic number.

It is not a de Polignac number, because 4008397 - 2¹¹ = 4006349 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 (4008391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2004198 + 2004199.

It is an arithmetic number, because the mean of its divisors is an integer number (2004199).

Almost surely, 2^4008397 is an apocalyptic number.

It is an amenable number.

4008397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4008397 is an equidigital number, since it uses as much as digits as its factorization.

4008397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 4008397 is about 2002.0981494422. The cubic root of 4008397 is about 158.8511059489.

The spelling of 4008397 in words is "four million, eight thousand, three hundred ninety-seven".