149085909 has 12 divisors (see below), whose sum is σ = 246110176. Its totient is φ = 85191912.

The previous prime is 149085907. The next prime is 149085941. The reversal of 149085909 is 909580941.

It is not a de Polignac number, because 149085909 - 2¹ = 149085907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149085901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1183159 + ... + 1183284.

Almost surely, 2^149085909 is an apocalyptic number.

It is an amenable number.

149085909 is a deficient number, since it is larger than the sum of its proper divisors (97024267).

149085909 is a wasteful number, since it uses less digits than its factorization.

149085909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366456 (or 2366453 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 45.

The square root of 149085909 is about 12210.0740783994. The cubic root of 149085909 is about 530.2477884896.

The spelling of 149085909 in words is "one hundred forty-nine million, eighty-five thousand, nine hundred nine".