4004343421 has 8 divisors (see below), whose sum is σ = 4566038904. Its totient is φ = 3478886400.

The previous prime is 4004343419. The next prime is 4004343437. The reversal of 4004343421 is 1243434004.

It can be written as a sum of positive squares in 4 ways, for example, as 617796 + 4003725625 = 786^2 + 63275^2 .

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 4004343421 - 2¹ = 4004343419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4004343451) 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, 9059380 + ... + 9059821.

It is an arithmetic number, because the mean of its divisors is an integer number (570754863).

Almost surely, 2^4004343421 is an apocalyptic number.

It is an amenable number.

4004343421 is a deficient number, since it is larger than the sum of its proper divisors (561695483).

4004343421 is a wasteful number, since it uses less digits than its factorization.

4004343421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18119231.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 4004343421 is about 63279.8816449589. The cubic root of 4004343421 is about 1587.9754067183.

Adding to 4004343421 its reverse (1243434004), we get a palindrome (5247777425).

The spelling of 4004343421 in words is "four billion, four million, three hundred forty-three thousand, four hundred twenty-one".