441620261 has 2 divisors, whose sum is σ = 441620262. Its totient is φ = 441620260.

The previous prime is 441620239. The next prime is 441620273. The reversal of 441620261 is 162026144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309232225 + 132388036 = 17585^2 + 11506^2 .

It is a cyclic number.

It is not a de Polignac number, because 441620261 - 2¹⁰ = 441619237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 441620261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (441620561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220810130 + 220810131.

It is an arithmetic number, because the mean of its divisors is an integer number (220810131).

Almost surely, 2^441620261 is an apocalyptic number.

It is an amenable number.

441620261 is a deficient number, since it is larger than the sum of its proper divisors (1).

441620261 is an equidigital number, since it uses as much as digits as its factorization.

441620261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 441620261 is about 21014.7629299024. The cubic root of 441620261 is about 761.5229508788.

The spelling of 441620261 in words is "four hundred forty-one million, six hundred twenty thousand, two hundred sixty-one".