169609012 has 12 divisors (see below), whose sum is σ = 297025540. Its totient is φ = 84744576.

The previous prime is 169609007. The next prime is 169609019. The reversal of 169609012 is 210906961.

It can be written as a sum of positive squares in 2 ways, for example, as 54819216 + 114789796 = 7404^2 + 10714^2 .

It is a super-2 number, since 2×169609012² = 57534433903232288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169609019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8283 + ... + 20194.

Almost surely, 2^169609012 is an apocalyptic number.

It is an amenable number.

169609012 is a deficient number, since it is larger than the sum of its proper divisors (127416528).

169609012 is a wasteful number, since it uses less digits than its factorization.

169609012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29970 (or 29968 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 169609012 is about 13023.4024740081. The cubic root of 169609012 is about 553.5408055714.

The spelling of 169609012 in words is "one hundred sixty-nine million, six hundred nine thousand, twelve".