168449089 has 4 divisors (see below), whose sum is σ = 168721840. Its totient is φ = 168176340.

The previous prime is 168449077. The next prime is 168449111. The reversal of 168449089 is 980944861.

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 168449089 - 2⁷ = 168448961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168449069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135447 + ... + 136684.

It is an arithmetic number, because the mean of its divisors is an integer number (42180460).

Almost surely, 2^168449089 is an apocalyptic number.

It is an amenable number.

168449089 is a deficient number, since it is larger than the sum of its proper divisors (272751).

168449089 is an equidigital number, since it uses as much as digits as its factorization.

168449089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272750.

The product of its (nonzero) digits is 497664, while the sum is 49.

The square root of 168449089 is about 12978.7938191498. The cubic root of 168449089 is about 552.2760654839.

The spelling of 168449089 in words is "one hundred sixty-eight million, four hundred forty-nine thousand, eighty-nine".