434613521 has 4 divisors (see below), whose sum is σ = 448633344. Its totient is φ = 420593700.

The previous prime is 434613499. The next prime is 434613527. The reversal of 434613521 is 125316434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434613521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (434613527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7009865 + ... + 7009926.

It is an arithmetic number, because the mean of its divisors is an integer number (112158336).

Almost surely, 2^434613521 is an apocalyptic number.

It is an amenable number.

434613521 is a deficient number, since it is larger than the sum of its proper divisors (14019823).

434613521 is a wasteful number, since it uses less digits than its factorization.

434613521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14019822.

The product of its digits is 8640, while the sum is 29.

The square root of 434613521 is about 20847.3864309174. The cubic root of 434613521 is about 757.4740243864.

Adding to 434613521 its reverse (125316434), we get a palindrome (559929955).

The spelling of 434613521 in words is "four hundred thirty-four million, six hundred thirteen thousand, five hundred twenty-one".