434113021 has 2 divisors, whose sum is σ = 434113022. Its totient is φ = 434113020.

The previous prime is 434112949. The next prime is 434113039. The reversal of 434113021 is 120311434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 426876921 + 7236100 = 20661^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 434113021 - 2⁹ = 434112509 is a prime.

It is a super-4 number, since 4×434113021⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a self number, because there is not a number n which added to its sum of digits gives 434113021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434116021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217056510 + 217056511.

It is an arithmetic number, because the mean of its divisors is an integer number (217056511).

Almost surely, 2^434113021 is an apocalyptic number.

It is an amenable number.

434113021 is a deficient number, since it is larger than the sum of its proper divisors (1).

434113021 is an equidigital number, since it uses as much as digits as its factorization.

434113021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 434113021 is about 20835.3790702257. The cubic root of 434113021 is about 757.1831442107.

Adding to 434113021 its reverse (120311434), we get a palindrome (554424455).

The spelling of 434113021 in words is "four hundred thirty-four million, one hundred thirteen thousand, twenty-one".