4020004397 has 2 divisors, whose sum is σ = 4020004398. Its totient is φ = 4020004396.

The previous prime is 4020004337. The next prime is 4020004409. The reversal of 4020004397 is 7934000204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3371079721 + 648924676 = 58061^2 + 25474^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020004397 - 2¹⁰ = 4020003373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4020004337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010002198 + 2010002199.

It is an arithmetic number, because the mean of its divisors is an integer number (2010002199).

Almost surely, 2^4020004397 is an apocalyptic number.

It is an amenable number.

4020004397 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020004397 is an equidigital number, since it uses as much as digits as its factorization.

4020004397 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 29.

The square root of 4020004397 is about 63403.5046113383. The cubic root of 4020004397 is about 1590.0429028678.

The spelling of 4020004397 in words is "four billion, twenty million, four thousand, three hundred ninety-seven".