448978 has 8 divisors (see below), whose sum is σ = 696780. Its totient is φ = 216720.

The previous prime is 448969. The next prime is 448993. The reversal of 448978 is 879844.

It can be written as a sum of positive squares in 2 ways, for example, as 439569 + 9409 = 663^2 + 97^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 448978.

It is an unprimeable number.

448978 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 3813 + ... + 3928.

2⁴⁴⁸⁹⁷⁸ is an apocalyptic number.

448978 is a deficient number, since it is larger than the sum of its proper divisors (247802).

448978 is a wasteful number, since it uses less digits than its factorization.

448978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7772.

The product of its digits is 64512, while the sum is 40.

The square root of 448978 is about 670.0582064269. The cubic root of 448978 is about 76.5728868041.

The spelling of 448978 in words is "four hundred forty-eight thousand, nine hundred seventy-eight".