4404021013 has 4 divisors (see below), whose sum is σ = 5033166880. Its totient is φ = 3774875148.

The previous prime is 4404020993. The next prime is 4404021031. The reversal of 4404021013 is 3101204044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4404021013 - 2⁹ = 4404020501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4404021313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314572923 + ... + 314572936.

It is an arithmetic number, because the mean of its divisors is an integer number (1258291720).

Almost surely, 2^4404021013 is an apocalyptic number.

It is an amenable number.

4404021013 is a deficient number, since it is larger than the sum of its proper divisors (629145867).

4404021013 is an equidigital number, since it uses as much as digits as its factorization.

4404021013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629145866.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 4404021013 is about 66362.7984114594. The cubic root of 4404021013 is about 1639.1415561121.

Adding to 4404021013 its reverse (3101204044), we get a palindrome (7505225057).

The spelling of 4404021013 in words is "four billion, four hundred four million, twenty-one thousand, thirteen".