434520405 has 96 divisors (see below), whose sum is σ = 884183040. Its totient is φ = 195143040.

The previous prime is 434520377. The next prime is 434520409. The reversal of 434520405 is 504025434.

It is not a de Polignac number, because 434520405 - 2⁷ = 434520277 is a prime.

It is a super-2 number, since 2×434520405² = 377615964722728050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434520409) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 441544 + ... + 442526.

It is an arithmetic number, because the mean of its divisors is an integer number (9210240).

Almost surely, 2^434520405 is an apocalyptic number.

434520405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

434520405 is an abundant number, since it is smaller than the sum of its proper divisors (449662635).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

434520405 is a wasteful number, since it uses less digits than its factorization.

434520405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1068 counting only the distinct ones).

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

The square root of 434520405 is about 20845.1530337390. The cubic root of 434520405 is about 757.4199242218.

Adding to 434520405 its reverse (504025434), we get a palindrome (938545839).

The spelling of 434520405 in words is "four hundred thirty-four million, five hundred twenty thousand, four hundred five".