169549149 has 32 divisors (see below), whose sum is σ = 283382784. Its totient is φ = 87598080.

The previous prime is 169549147. The next prime is 169549157. The reversal of 169549149 is 941945961.

It is a happy number.

It is not a de Polignac number, because 169549149 - 2¹ = 169549147 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 169549098 and 169549107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169549147) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42682 + ... + 46484.

It is an arithmetic number, because the mean of its divisors is an integer number (8855712).

Almost surely, 2^169549149 is an apocalyptic number.

It is an amenable number.

169549149 is a deficient number, since it is larger than the sum of its proper divisors (113833635).

169549149 is a wasteful number, since it uses less digits than its factorization.

169549149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4017.

The product of its digits is 349920, while the sum is 48.

The square root of 169549149 is about 13021.1039854538. The cubic root of 169549149 is about 553.4756743772.

The spelling of 169549149 in words is "one hundred sixty-nine million, five hundred forty-nine thousand, one hundred forty-nine".