457849169 has 4 divisors (see below), whose sum is σ = 458591844. Its totient is φ = 457106496.

The previous prime is 457849157. The next prime is 457849207. The reversal of 457849169 is 961948754.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7772944 + 450076225 = 2788^2 + 21215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-457849169 is a prime.

It is a super-2 number, since 2×457849169² = 419251723107981122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 457849169.

It is not an unprimeable number, because it can be changed into a prime (457749169) 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, 370412 + ... + 371645.

It is an arithmetic number, because the mean of its divisors is an integer number (114647961).

Almost surely, 2^457849169 is an apocalyptic number.

It is an amenable number.

457849169 is a deficient number, since it is larger than the sum of its proper divisors (742675).

457849169 is an equidigital number, since it uses as much as digits as its factorization.

457849169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742674.

The product of its digits is 2177280, while the sum is 53.

The square root of 457849169 is about 21397.4103339633. The cubic root of 457849169 is about 770.7392512501.

The spelling of 457849169 in words is "four hundred fifty-seven million, eight hundred forty-nine thousand, one hundred sixty-nine".