434431405 has 4 divisors (see below), whose sum is σ = 521317692. Its totient is φ = 347545120.

The previous prime is 434431373. The next prime is 434431433. The reversal of 434431405 is 504134434.

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 103591684 + 330839721 = 10178^2 + 18189^2 .

It is not a de Polignac number, because 434431405 - 2⁵ = 434431373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43443136 + ... + 43443145.

It is an arithmetic number, because the mean of its divisors is an integer number (130329423).

Almost surely, 2^434431405 is an apocalyptic number.

It is an amenable number.

434431405 is a deficient number, since it is larger than the sum of its proper divisors (86886287).

434431405 is an equidigital number, since it uses as much as digits as its factorization.

434431405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86886286.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 434431405 is about 20843.0181355772. The cubic root of 434431405 is about 757.3682082184.

Adding to 434431405 its reverse (504134434), we get a palindrome (938565839).

The spelling of 434431405 in words is "four hundred thirty-four million, four hundred thirty-one thousand, four hundred five".