434638 has 4 divisors (see below), whose sum is σ = 651960. Its totient is φ = 217318.

The previous prime is 434611. The next prime is 434647. The reversal of 434638 is 836434.

434638 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108658 + ... + 108661.

It is an arithmetic number, because the mean of its divisors is an integer number (162990).

2⁴³⁴⁶³⁸ is an apocalyptic number.

434638 is a deficient number, since it is larger than the sum of its proper divisors (217322).

434638 is a wasteful number, since it uses less digits than its factorization.

434638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217321.

The product of its digits is 6912, while the sum is 28.

The square root of 434638 is about 659.2708093037. The cubic root of 434638 is about 75.7488245342.

The spelling of 434638 in words is "four hundred thirty-four thousand, six hundred thirty-eight".