169440144 has 40 divisors (see below), whose sum is σ = 438861792. Its totient is φ = 56332800.

The previous prime is 169440143. The next prime is 169440169. The reversal of 169440144 is 441044961.

It is not an unprimeable number, because it can be changed into a prime (169440143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14847 + ... + 23649.

Almost surely, 2^169440144 is an apocalyptic number.

It is an amenable number.

169440144 is an abundant number, since it is smaller than the sum of its proper divisors (269421648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169440144 is a wasteful number, since it uses less digits than its factorization.

169440144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9215 (or 9209 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 169440144 is about 13016.9176074830. The cubic root of 169440144 is about 553.3570370968.

The spelling of 169440144 in words is "one hundred sixty-nine million, four hundred forty thousand, one hundred forty-four".