434191427 has 2 divisors, whose sum is σ = 434191428. Its totient is φ = 434191426.

The previous prime is 434191403. The next prime is 434191547. The reversal of 434191427 is 724191434.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 434191427 - 2¹² = 434187331 is a prime.

It is not a weakly prime, because it can be changed into another prime (434191027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217095713 + 217095714.

It is an arithmetic number, because the mean of its divisors is an integer number (217095714).

Almost surely, 2^434191427 is an apocalyptic number.

434191427 is a deficient number, since it is larger than the sum of its proper divisors (1).

434191427 is an equidigital number, since it uses as much as digits as its factorization.

434191427 is an evil number, because the sum of its binary digits is even.

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

The square root of 434191427 is about 20837.2605445150. The cubic root of 434191427 is about 757.2287269084.

The spelling of 434191427 in words is "four hundred thirty-four million, one hundred ninety-one thousand, four hundred twenty-seven".