8169489 has 12 divisors (see below), whose sum is σ = 12119796. Its totient is φ = 5298912.

The previous prime is 8169481. The next prime is 8169509. The reversal of 8169489 is 9849618.

8169489 is a `hidden beast` number, since 8 + 169 + 489 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3294225 + 4875264 = 1815^2 + 2208^2 .

It is not a de Polignac number, because 8169489 - 2³ = 8169481 is a prime.

It is a super-2 number, since 2×8169489² = 133481101042242, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8169481) 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, 11934 + ... + 12599.

It is an arithmetic number, because the mean of its divisors is an integer number (1009983).

Almost surely, 2^8169489 is an apocalyptic number.

It is an amenable number.

8169489 is a deficient number, since it is larger than the sum of its proper divisors (3950307).

8169489 is a wasteful number, since it uses less digits than its factorization.

8169489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24576 (or 24573 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 8169489 is about 2858.2317960585. The cubic root of 8169489 is about 201.4025496144.

The spelling of 8169489 in words is "eight million, one hundred sixty-nine thousand, four hundred eighty-nine".