434420505 has 12 divisors (see below), whose sum is σ = 752995620. Its totient is φ = 231690912.

The previous prime is 434420491. The next prime is 434420537. The reversal of 434420505 is 505024434.

It can be written as a sum of positive squares in 2 ways, for example, as 204261264 + 230159241 = 14292^2 + 15171^2 .

It is not a de Polignac number, because 434420505 - 2¹⁶ = 434354969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4826850 + ... + 4826939.

It is an arithmetic number, because the mean of its divisors is an integer number (62749635).

Almost surely, 2^434420505 is an apocalyptic number.

434420505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

434420505 is a deficient number, since it is larger than the sum of its proper divisors (318575115).

434420505 is a wasteful number, since it uses less digits than its factorization.

434420505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9653800 (or 9653797 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 434420505 is about 20842.7566554907. The cubic root of 434420505 is about 757.3618739752.

Adding to 434420505 its reverse (505024434), we get a palindrome (939444939).

The spelling of 434420505 in words is "four hundred thirty-four million, four hundred twenty thousand, five hundred five".