4001597 has 2 divisors, whose sum is σ = 4001598. Its totient is φ = 4001596.

The previous prime is 4001593. The next prime is 4001603. The reversal of 4001597 is 7951004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3189796 + 811801 = 1786^2 + 901^2 .

It is a cyclic number.

It is not a de Polignac number, because 4001597 - 2² = 4001593 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 (4001593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000798 + 2000799.

It is an arithmetic number, because the mean of its divisors is an integer number (2000799).

Almost surely, 2^4001597 is an apocalyptic number.

It is an amenable number.

4001597 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001597 is an equidigital number, since it uses as much as digits as its factorization.

4001597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 4001597 is about 2000.3992101578. The cubic root of 4001597 is about 158.7612280483.

The spelling of 4001597 in words is "four million, one thousand, five hundred ninety-seven".