4344021 has 18 divisors (see below), whose sum is σ = 6898710. Its totient is φ = 2632080.

The previous prime is 4344019. The next prime is 4344023. The reversal of 4344021 is 1204434.

It is an interprime number because it is at equal distance from previous prime (4344019) and next prime (4344023).

It can be written as a sum of positive squares in only one way, i.e., 3663396 + 680625 = 1914^2 + 825^2 .

It is not a de Polignac number, because 4344021 - 2¹ = 4344019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4343985 and 4344003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4344023) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 906 + ... + 3083.

Almost surely, 2^4344021 is an apocalyptic number.

It is an amenable number.

4344021 is a deficient number, since it is larger than the sum of its proper divisors (2554689).

4344021 is a wasteful number, since it uses less digits than its factorization.

4344021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017 (or 4003 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 4344021 is about 2084.2315130522. The cubic root of 4344021 is about 163.1663650768.

Adding to 4344021 its reverse (1204434), we get a palindrome (5548455).

The spelling of 4344021 in words is "four million, three hundred forty-four thousand, twenty-one".