434250221 has 2 divisors, whose sum is σ = 434250222. Its totient is φ = 434250220.

The previous prime is 434250217. The next prime is 434250239. The reversal of 434250221 is 122052434.

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., 411075625 + 23174596 = 20275^2 + 4814^2 .

It is a cyclic number.

It is not a de Polignac number, because 434250221 - 2² = 434250217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434255221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217125110 + 217125111.

It is an arithmetic number, because the mean of its divisors is an integer number (217125111).

Almost surely, 2^434250221 is an apocalyptic number.

It is an amenable number.

434250221 is a deficient number, since it is larger than the sum of its proper divisors (1).

434250221 is an equidigital number, since it uses as much as digits as its factorization.

434250221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 434250221 is about 20838.6712868167. The cubic root of 434250221 is about 757.2629042272.

The spelling of 434250221 in words is "four hundred thirty-four million, two hundred fifty thousand, two hundred twenty-one".