4021443197 has 2 divisors, whose sum is σ = 4021443198. Its totient is φ = 4021443196.

The previous prime is 4021443193. The next prime is 4021443227. The reversal of 4021443197 is 7913441204.

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., 2289718201 + 1731724996 = 47851^2 + 41614^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021443197 - 2² = 4021443193 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021443193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010721598 + 2010721599.

It is an arithmetic number, because the mean of its divisors is an integer number (2010721599).

Almost surely, 2^4021443197 is an apocalyptic number.

It is an amenable number.

4021443197 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021443197 is an equidigital number, since it uses as much as digits as its factorization.

4021443197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 4021443197 is about 63414.8499722265. The cubic root of 4021443197 is about 1590.2325776890.

The spelling of 4021443197 in words is "four billion, twenty-one million, four hundred forty-three thousand, one hundred ninety-seven".