930144421 has 2 divisors, whose sum is σ = 930144422. Its totient is φ = 930144420.

The previous prime is 930144419. The next prime is 930144427. The reversal of 930144421 is 124441039.

930144421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 929396196 + 748225 = 30486^2 + 865^2 .

It is an emirp because it is prime and its reverse (124441039) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 930144421 - 2¹ = 930144419 is a prime.

Together with 930144419, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 930144421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (930144427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465072210 + 465072211.

It is an arithmetic number, because the mean of its divisors is an integer number (465072211).

Almost surely, 2^930144421 is an apocalyptic number.

It is an amenable number.

930144421 is a deficient number, since it is larger than the sum of its proper divisors (1).

930144421 is an equidigital number, since it uses as much as digits as its factorization.

930144421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 930144421 is about 30498.2691476090. The cubic root of 930144421 is about 976.1505316982.

The spelling of 930144421 in words is "nine hundred thirty million, one hundred forty-four thousand, four hundred twenty-one".