421444832 has 12 divisors (see below), whose sum is σ = 829719576. Its totient is φ = 210722400.

The previous prime is 421444831. The next prime is 421444873. The reversal of 421444832 is 238444124.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 13170151 = 421444832 / (4 + 2 + 1 + 4 + 4 + 4 + 8 + 3 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421444831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6585044 + ... + 6585107.

It is an arithmetic number, because the mean of its divisors is an integer number (69143298).

Almost surely, 2^421444832 is an apocalyptic number.

It is an amenable number.

421444832 is a deficient number, since it is larger than the sum of its proper divisors (408274744).

421444832 is a wasteful number, since it uses less digits than its factorization.

421444832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13170161 (or 13170153 counting only the distinct ones).

The product of its digits is 24576, while the sum is 32.

The square root of 421444832 is about 20529.1215593849. The cubic root of 421444832 is about 749.7449989387.

Adding to 421444832 its reverse (238444124), we get a palindrome (659888956).

The spelling of 421444832 in words is "four hundred twenty-one million, four hundred forty-four thousand, eight hundred thirty-two".