721088941 has 2 divisors, whose sum is σ = 721088942. Its totient is φ = 721088940.

The previous prime is 721088933. The next prime is 721088957. The reversal of 721088941 is 149880127.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 620508100 + 100580841 = 24910^2 + 10029^2 .

It is a cyclic number.

It is not a de Polignac number, because 721088941 - 2³ = 721088933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 721088894 and 721088903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (721088981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360544470 + 360544471.

It is an arithmetic number, because the mean of its divisors is an integer number (360544471).

Almost surely, 2^721088941 is an apocalyptic number.

It is an amenable number.

721088941 is a deficient number, since it is larger than the sum of its proper divisors (1).

721088941 is an equidigital number, since it uses as much as digits as its factorization.

721088941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 721088941 is about 26853.0992810886. The cubic root of 721088941 is about 896.7325722039.

The spelling of 721088941 in words is "seven hundred twenty-one million, eighty-eight thousand, nine hundred forty-one".