169489969 has 8 divisors (see below), whose sum is σ = 185342400. Its totient is φ = 153711600.

The previous prime is 169489963. The next prime is 169489973. The reversal of 169489969 is 969984961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169489969 is a prime.

It is a super-2 number, since 2×169489969² = 57453699183241922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169489963) 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, 13669 + ... + 22930.

It is an arithmetic number, because the mean of its divisors is an integer number (23167800).

Almost surely, 2^169489969 is an apocalyptic number.

It is an amenable number.

169489969 is a deficient number, since it is larger than the sum of its proper divisors (15852431).

169489969 is a wasteful number, since it uses less digits than its factorization.

169489969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37031.

The product of its digits is 7558272, while the sum is 61.

The square root of 169489969 is about 13018.8313223576. The cubic root of 169489969 is about 553.4112712189.

The spelling of 169489969 in words is "one hundred sixty-nine million, four hundred eighty-nine thousand, nine hundred sixty-nine".