434400203 has 4 divisors (see below), whose sum is σ = 434635488. Its totient is φ = 434164920.

The previous prime is 434400199. The next prime is 434400217. The reversal of 434400203 is 302004434.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 434400203 - 2² = 434400199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (434400803) by changing a digit.

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, 114851 + ... + 118572.

It is an arithmetic number, because the mean of its divisors is an integer number (108658872).

Almost surely, 2^434400203 is an apocalyptic number.

434400203 is a deficient number, since it is larger than the sum of its proper divisors (235285).

434400203 is a wasteful number, since it uses less digits than its factorization.

434400203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235284.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 434400203 is about 20842.2696220925. The cubic root of 434400203 is about 757.3500757290.

Adding to 434400203 its reverse (302004434), we get a palindrome (736404637).

The spelling of 434400203 in words is "four hundred thirty-four million, four hundred thousand, two hundred three".