4423402021 has 8 divisors (see below), whose sum is σ = 4617466560. Its totient is φ = 4229482752.

The previous prime is 4423402019. The next prime is 4423402127. The reversal of 4423402021 is 1202043244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4423402021 - 2¹ = 4423402019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4423401983 and 4423402001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4423406021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28390 + ... + 98248.

It is an arithmetic number, because the mean of its divisors is an integer number (577183320).

Almost surely, 2^4423402021 is an apocalyptic number.

It is an amenable number.

4423402021 is a deficient number, since it is larger than the sum of its proper divisors (194064539).

4423402021 is a wasteful number, since it uses less digits than its factorization.

4423402021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72635.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4423402021 is about 66508.6612479909. The cubic root of 4423402021 is about 1641.5425231499.

Adding to 4423402021 its reverse (1202043244), we get a palindrome (5625445265).

The spelling of 4423402021 in words is "four billion, four hundred twenty-three million, four hundred two thousand, twenty-one".