909236641 has 2 divisors, whose sum is σ = 909236642. Its totient is φ = 909236640.

The previous prime is 909236639. The next prime is 909236683. The reversal of 909236641 is 146632909.

909236641 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., 870486016 + 38750625 = 29504^2 + 6225^2 .

It is an emirp because it is prime and its reverse (146632909) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 909236641 - 2¹ = 909236639 is a prime.

It is a super-2 number, since 2×909236641² = 1653422538673925762, which contains 22 as substring.

Together with 909236639, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 909236594 and 909236603.

It is not a weakly prime, because it can be changed into another prime (909236611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454618320 + 454618321.

It is an arithmetic number, because the mean of its divisors is an integer number (454618321).

Almost surely, 2^909236641 is an apocalyptic number.

It is an amenable number.

909236641 is a deficient number, since it is larger than the sum of its proper divisors (1).

909236641 is an equidigital number, since it uses as much as digits as its factorization.

909236641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 909236641 is about 30153.5510512444. The cubic root of 909236641 is about 968.7810674685.

The spelling of 909236641 in words is "nine hundred nine million, two hundred thirty-six thousand, six hundred forty-one".