434426581 has 2 divisors, whose sum is σ = 434426582. Its totient is φ = 434426580.

The previous prime is 434426543. The next prime is 434426623. The reversal of 434426581 is 185624434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432265681 + 2160900 = 20791^2 + 1470^2 .

It is a cyclic number.

It is not a de Polignac number, because 434426581 - 2¹³ = 434418389 is a prime.

It is a super-2 number, since 2×434426581² = 377452908558699122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 434426581.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (434426521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 217213290 + 217213291.

It is an arithmetic number, because the mean of its divisors is an integer number (217213291).

Almost surely, 2^434426581 is an apocalyptic number.

It is an amenable number.

434426581 is a deficient number, since it is larger than the sum of its proper divisors (1).

434426581 is an equidigital number, since it uses as much as digits as its factorization.

434426581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 37.

The square root of 434426581 is about 20842.9024130518. The cubic root of 434426581 is about 757.3654048930.

The spelling of 434426581 in words is "four hundred thirty-four million, four hundred twenty-six thousand, five hundred eighty-one".