911009089 has 2 divisors, whose sum is σ = 911009090. Its totient is φ = 911009088.

The previous prime is 911009083. The next prime is 911009149. The reversal of 911009089 is 980900119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 629608464 + 281400625 = 25092^2 + 16775^2 .

It is a cyclic number.

It is not a de Polignac number, because 911009089 - 2¹³ = 911000897 is a prime.

It is not a weakly prime, because it can be changed into another prime (911009083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455504544 + 455504545.

It is an arithmetic number, because the mean of its divisors is an integer number (455504545).

Almost surely, 2^911009089 is an apocalyptic number.

It is an amenable number.

911009089 is a deficient number, since it is larger than the sum of its proper divisors (1).

911009089 is an equidigital number, since it uses as much as digits as its factorization.

911009089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 911009089 is about 30182.9271111998. The cubic root of 911009089 is about 969.4101664384.

The spelling of 911009089 in words is "nine hundred eleven million, nine thousand, eighty-nine".