434621 has 4 divisors (see below), whose sum is σ = 474144. Its totient is φ = 395100.

The previous prime is 434611. The next prime is 434647. The reversal of 434621 is 126434.

It is a happy number.

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-434621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 434593 and 434602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19745 + ... + 19766.

It is an arithmetic number, because the mean of its divisors is an integer number (118536).

2⁴³⁴⁶²¹ is an apocalyptic number.

It is an amenable number.

434621 is a deficient number, since it is larger than the sum of its proper divisors (39523).

434621 is a wasteful number, since it uses less digits than its factorization.

434621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39522.

The product of its digits is 576, while the sum is 20.

The square root of 434621 is about 659.2579161451. The cubic root of 434621 is about 75.7478369332.

It can be divided in two parts, 43 and 4621, that added together give a palindrome (4664).

The spelling of 434621 in words is "four hundred thirty-four thousand, six hundred twenty-one".