421204444 has 12 divisors (see below), whose sum is σ = 780467184. Its totient is φ = 198213824.

The previous prime is 421204417. The next prime is 421204457. The reversal of 421204444 is 444402124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3097024 + ... + 3097159.

It is an arithmetic number, because the mean of its divisors is an integer number (65038932).

Almost surely, 2^421204444 is an apocalyptic number.

It is an amenable number.

421204444 is a deficient number, since it is larger than the sum of its proper divisors (359262740).

421204444 is a wasteful number, since it uses less digits than its factorization.

421204444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6194204 (or 6194202 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 421204444 is about 20523.2659194388. The cubic root of 421204444 is about 749.6024227618.

Adding to 421204444 its reverse (444402124), we get a palindrome (865606568).

It can be divided in two parts, 42120 and 4444, that added together give a palindrome (46564).

The spelling of 421204444 in words is "four hundred twenty-one million, two hundred four thousand, four hundred forty-four".