454443649 has 4 divisors (see below), whose sum is σ = 495756720. Its totient is φ = 413130580.

The previous prime is 454443641. The next prime is 454443667. The reversal of 454443649 is 946344454.

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 454443649 - 2³ = 454443641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (454443641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20656519 + ... + 20656540.

It is an arithmetic number, because the mean of its divisors is an integer number (123939180).

Almost surely, 2^454443649 is an apocalyptic number.

It is an amenable number.

454443649 is a deficient number, since it is larger than the sum of its proper divisors (41313071).

454443649 is a wasteful number, since it uses less digits than its factorization.

454443649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41313070.

The product of its digits is 829440, while the sum is 43.

The square root of 454443649 is about 21317.6839501856. The cubic root of 454443649 is about 768.8235528892.

The spelling of 454443649 in words is "four hundred fifty-four million, four hundred forty-three thousand, six hundred forty-nine".