454185749 has 4 divisors (see below), whose sum is σ = 454309164. Its totient is φ = 454062336.

The previous prime is 454185731. The next prime is 454185757. The reversal of 454185749 is 947581454.

It is a happy number.

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 98863249 + 355322500 = 9943^2 + 18850^2 .

It is a cyclic number.

It is not a de Polignac number, because 454185749 - 2¹⁶ = 454120213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454185649) 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, 56012 + ... + 63605.

It is an arithmetic number, because the mean of its divisors is an integer number (113577291).

Almost surely, 2^454185749 is an apocalyptic number.

It is an amenable number.

454185749 is a deficient number, since it is larger than the sum of its proper divisors (123415).

454185749 is a wasteful number, since it uses less digits than its factorization.

454185749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123414.

The product of its digits is 806400, while the sum is 47.

The square root of 454185749 is about 21311.6341231732. The cubic root of 454185749 is about 768.6780877584.

The spelling of 454185749 in words is "four hundred fifty-four million, one hundred eighty-five thousand, seven hundred forty-nine".