30444039421 has 2 divisors, whose sum is σ = 30444039422. Its totient is φ = 30444039420.

The previous prime is 30444039407. The next prime is 30444039491. The reversal of 30444039421 is 12493044403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21744746521 + 8699292900 = 147461^2 + 93270^2 .

It is a cyclic number.

It is not a de Polignac number, because 30444039421 - 2⁵ = 30444039389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30444039491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15222019710 + 15222019711.

It is an arithmetic number, because the mean of its divisors is an integer number (15222019711).

Almost surely, 2^30444039421 is an apocalyptic number.

It is an amenable number.

30444039421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30444039421 is an equidigital number, since it uses as much as digits as its factorization.

30444039421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 30444039421 in words is "thirty billion, four hundred forty-four million, thirty-nine thousand, four hundred twenty-one".