454978 has 4 divisors (see below), whose sum is σ = 682470. Its totient is φ = 227488.

The previous prime is 454973. The next prime is 454991. The reversal of 454978 is 879454.

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

It can be written as a sum of positive squares in only one way, i.e., 400689 + 54289 = 633^2 + 233^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (454973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113743 + ... + 113746.

2⁴⁵⁴⁹⁷⁸ is an apocalyptic number.

454978 is a deficient number, since it is larger than the sum of its proper divisors (227492).

454978 is a wasteful number, since it uses less digits than its factorization.

454978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227491.

The product of its digits is 40320, while the sum is 37.

The square root of 454978 is about 674.5205704795. The cubic root of 454978 is about 76.9124771548.

It can be divided in two parts, 4 and 54978, that multiplied together give a palindrome (219912).

The spelling of 454978 in words is "four hundred fifty-four thousand, nine hundred seventy-eight".