909000090149 has 2 divisors, whose sum is σ = 909000090150. Its totient is φ = 909000090148.

The previous prime is 909000090139. The next prime is 909000090169. The reversal of 909000090149 is 941090000909.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 533457865924 + 375542224225 = 730382^2 + 612815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-909000090149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (909000090139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454500045074 + 454500045075.

It is an arithmetic number, because the mean of its divisors is an integer number (454500045075).

Almost surely, 2^909000090149 is an apocalyptic number.

It is an amenable number.

909000090149 is a deficient number, since it is larger than the sum of its proper divisors (1).

909000090149 is an equidigital number, since it uses as much as digits as its factorization.

909000090149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 41.

The spelling of 909000090149 in words is "nine hundred nine billion, ninety thousand, one hundred forty-nine".