4429202021 has 2 divisors, whose sum is σ = 4429202022. Its totient is φ = 4429202020.

The previous prime is 4429201963. The next prime is 4429202033. The reversal of 4429202021 is 1202029244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2966980900 + 1462221121 = 54470^2 + 38239^2 .

It is a cyclic number.

It is not a de Polignac number, because 4429202021 - 2³⁰ = 3355460197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4429202051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2214601010 + 2214601011.

It is an arithmetic number, because the mean of its divisors is an integer number (2214601011).

Almost surely, 2^4429202021 is an apocalyptic number.

It is an amenable number.

4429202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4429202021 is an equidigital number, since it uses as much as digits as its factorization.

4429202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 4429202021 is about 66552.2503075591. The cubic root of 4429202021 is about 1642.2596776766.

The spelling of 4429202021 in words is "four billion, four hundred twenty-nine million, two hundred two thousand, twenty-one".