9461383721 has 2 divisors, whose sum is σ = 9461383722. Its totient is φ = 9461383720.

The previous prime is 9461383717. The next prime is 9461383733. The reversal of 9461383721 is 1273831649.

9461383721 is digitally balanced in base 3, 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., 7698307600 + 1763076121 = 87740^2 + 41989^2 .

It is a cyclic number.

It is not a de Polignac number, because 9461383721 - 2² = 9461383717 is a prime.

It is not a weakly prime, because it can be changed into another prime (9461383021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4730691860 + 4730691861.

It is an arithmetic number, because the mean of its divisors is an integer number (4730691861).

Almost surely, 2^9461383721 is an apocalyptic number.

It is an amenable number.

9461383721 is a deficient number, since it is larger than the sum of its proper divisors (1).

9461383721 is an equidigital number, since it uses as much as digits as its factorization.

9461383721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 9461383721 is about 97269.6443963892. The cubic root of 9461383721 is about 2115.0382152872.

The spelling of 9461383721 in words is "nine billion, four hundred sixty-one million, three hundred eighty-three thousand, seven hundred twenty-one".