168849249 has 4 divisors (see below), whose sum is σ = 225132336. Its totient is φ = 112566164.

The previous prime is 168849217. The next prime is 168849251. The reversal of 168849249 is 942948861.

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, and also an emirpimes, since its reverse is a distinct semiprime: 942948861 = 3 ⋅314316287.

It is a cyclic number.

It is not a de Polignac number, because 168849249 - 2⁵ = 168849217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (168849259) 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, 28141539 + ... + 28141544.

It is an arithmetic number, because the mean of its divisors is an integer number (56283084).

Almost surely, 2^168849249 is an apocalyptic number.

It is an amenable number.

168849249 is a deficient number, since it is larger than the sum of its proper divisors (56283087).

168849249 is an equidigital number, since it uses as much as digits as its factorization.

168849249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56283086.

The product of its digits is 995328, while the sum is 51.

The square root of 168849249 is about 12994.2005910329. The cubic root of 168849249 is about 552.7130402875.

The spelling of 168849249 in words is "one hundred sixty-eight million, eight hundred forty-nine thousand, two hundred forty-nine".