421044433 has 4 divisors (see below), whose sum is σ = 430836208. Its totient is φ = 411252660.

The previous prime is 421044431. The next prime is 421044443. The reversal of 421044433 is 334440124.

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 not a de Polignac number, because 421044433 - 2¹ = 421044431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421044398 and 421044407.

It is not an unprimeable number, because it can be changed into a prime (421044431) 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, 4895823 + ... + 4895908.

It is an arithmetic number, because the mean of its divisors is an integer number (107709052).

Almost surely, 2^421044433 is an apocalyptic number.

421044433 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

421044433 is a deficient number, since it is larger than the sum of its proper divisors (9791775).

421044433 is an equidigital number, since it uses as much as digits as its factorization.

421044433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9791774.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 421044433 is about 20519.3672660733. The cubic root of 421044433 is about 749.5074887959.

Adding to 421044433 its reverse (334440124), we get a palindrome (755484557).

The spelling of 421044433 in words is "four hundred twenty-one million, forty-four thousand, four hundred thirty-three".