456478549 has 4 divisors (see below), whose sum is σ = 458126764. Its totient is φ = 454830336.

The previous prime is 456478541. The next prime is 456478567. The reversal of 456478549 is 945874654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945874654 = 2 ⋅472937327.

It can be written as a sum of positive squares in 2 ways, for example, as 42640900 + 413837649 = 6530^2 + 20343^2 .

It is a cyclic number.

It is not a de Polignac number, because 456478549 - 2³ = 456478541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 456478496 and 456478505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456478541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823692 + ... + 824245.

It is an arithmetic number, because the mean of its divisors is an integer number (114531691).

Almost surely, 2^456478549 is an apocalyptic number.

It is an amenable number.

456478549 is a deficient number, since it is larger than the sum of its proper divisors (1648215).

456478549 is a wasteful number, since it uses less digits than its factorization.

456478549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648214.

The product of its digits is 4838400, while the sum is 52.

The square root of 456478549 is about 21365.3586209078. The cubic root of 456478549 is about 769.9693859757.

The spelling of 456478549 in words is "four hundred fifty-six million, four hundred seventy-eight thousand, five hundred forty-nine".