421144443 has 24 divisors (see below), whose sum is σ = 646580480. Its totient is φ = 263392560.

The previous prime is 421144411. The next prime is 421144463. The reversal of 421144443 is 344441124.

421144443 is a `hidden beast` number, since 4 + 211 + 4 + 4 + 443 = 666.

It is not a de Polignac number, because 421144443 - 2⁵ = 421144411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421144463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5658 + ... + 29568.

Almost surely, 2^421144443 is an apocalyptic number.

421144443 is a deficient number, since it is larger than the sum of its proper divisors (225436037).

421144443 is a wasteful number, since it uses less digits than its factorization.

421144443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24039 (or 24036 counting only the distinct ones).

The product of its digits is 6144, while the sum is 27.

The square root of 421144443 is about 20521.8040873604. The cubic root of 421144443 is about 749.5668271966.

Adding to 421144443 its reverse (344441124), we get a palindrome (765585567).

The spelling of 421144443 in words is "four hundred twenty-one million, one hundred forty-four thousand, four hundred forty-three".