434845 has 4 divisors (see below), whose sum is σ = 521820. Its totient is φ = 347872.

The previous prime is 434839. The next prime is 434849. The reversal of 434845 is 548434.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47961 + 386884 = 219^2 + 622^2 .

It is a cyclic number.

It is not a de Polignac number, because 434845 - 2⁵ = 434813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434849) 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, 43480 + ... + 43489.

It is an arithmetic number, because the mean of its divisors is an integer number (130455).

2⁴³⁴⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

434845 is a deficient number, since it is larger than the sum of its proper divisors (86975).

434845 is an equidigital number, since it uses as much as digits as its factorization.

434845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86974.

The product of its digits is 7680, while the sum is 28.

The square root of 434845 is about 659.4277822476. The cubic root of 434845 is about 75.7608479637.

It can be divided in two parts, 43 and 4845, that multiplied together give a triangular number (208335 = T₆₄₅).

The spelling of 434845 in words is "four hundred thirty-four thousand, eight hundred forty-five".