450396778 has 16 divisors (see below), whose sum is σ = 729499680. Its totient is φ = 207322416.

The previous prime is 450396721. The next prime is 450396811. The reversal of 450396778 is 877693054.

It is a happy number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 13000 + ... + 32707.

It is an arithmetic number, because the mean of its divisors is an integer number (45593730).

Almost surely, 2^450396778 is an apocalyptic number.

450396778 is a deficient number, since it is larger than the sum of its proper divisors (279102902).

450396778 is a wasteful number, since it uses less digits than its factorization.

450396778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46101.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 450396778 is about 21222.5535221377. The cubic root of 450396778 is about 766.5345919514.

The spelling of 450396778 in words is "four hundred fifty million, three hundred ninety-six thousand, seven hundred seventy-eight".