4021233444 has 24 divisors (see below), whose sum is σ = 10425420320. Its totient is φ = 1340411112.

The previous prime is 4021233439. The next prime is 4021233553. The reversal of 4021233444 is 4443321204.

It is a happy number.

4021233444 is a `hidden beast` number, since 4 + 0 + 212 + 3 + 3 + 444 = 666.

It is a super-2 number, since 2×4021233444² = 32340636822288202272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18616714 + ... + 18616929.

Almost surely, 2^4021233444 is an apocalyptic number.

It is an amenable number.

4021233444 is an abundant number, since it is smaller than the sum of its proper divisors (6404186876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021233444 is a wasteful number, since it uses less digits than its factorization.

4021233444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37233656 (or 37233648 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 4021233444 is about 63413.1961345586. The cubic root of 4021233444 is about 1590.2049290865.

Adding to 4021233444 its reverse (4443321204), we get a palindrome (8464554648).

The spelling of 4021233444 in words is "four billion, twenty-one million, two hundred thirty-three thousand, four hundred forty-four".