911009149 has 2 divisors, whose sum is σ = 911009150. Its totient is φ = 911009148.

The previous prime is 911009089. The next prime is 911009167. The reversal of 911009149 is 941900119.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 554932249 + 356076900 = 23557^2 + 18870^2 .

It is a cyclic number.

It is not a de Polignac number, because 911009149 - 2¹⁷ = 910878077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (911009179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 455504574 + 455504575.

It is an arithmetic number, because the mean of its divisors is an integer number (455504575).

Almost surely, 2^911009149 is an apocalyptic number.

It is an amenable number.

911009149 is a deficient number, since it is larger than the sum of its proper divisors (1).

911009149 is an equidigital number, since it uses as much as digits as its factorization.

911009149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 911009149 is about 30182.9281051392. The cubic root of 911009149 is about 969.4101877205.

The spelling of 911009149 in words is "nine hundred eleven million, nine thousand, one hundred forty-nine".