168478969 has 4 divisors (see below), whose sum is σ = 169765200. Its totient is φ = 167192740.

The previous prime is 168478967. The next prime is 168479029. The reversal of 168478969 is 969874861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 168478969 - 2¹ = 168478967 is a prime.

It is a super-2 number, since 2×168478969² = 56770325990605922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168478967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642919 + ... + 643180.

It is an arithmetic number, because the mean of its divisors is an integer number (42441300).

Almost surely, 2^168478969 is an apocalyptic number.

It is an amenable number.

168478969 is a deficient number, since it is larger than the sum of its proper divisors (1286231).

168478969 is a wasteful number, since it uses less digits than its factorization.

168478969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286230.

The product of its digits is 5225472, while the sum is 58.

The square root of 168478969 is about 12979.9448766164. The cubic root of 168478969 is about 552.3087183432.

The spelling of 168478969 in words is "one hundred sixty-eight million, four hundred seventy-eight thousand, nine hundred sixty-nine".