455783978 has 8 divisors (see below), whose sum is σ = 736266468. Its totient is φ = 210361824.

The previous prime is 455783963. The next prime is 455783983. The reversal of 455783978 is 879387554.

It can be written as a sum of positive squares in 2 ways, for example, as 425720689 + 30063289 = 20633^2 + 5483^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8765051 + ... + 8765102.

Almost surely, 2^455783978 is an apocalyptic number.

455783978 is a deficient number, since it is larger than the sum of its proper divisors (280482490).

455783978 is a wasteful number, since it uses less digits than its factorization.

455783978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17530168.

The product of its digits is 8467200, while the sum is 56.

The square root of 455783978 is about 21349.0978263720. The cubic root of 455783978 is about 769.5786630643.

The spelling of 455783978 in words is "four hundred fifty-five million, seven hundred eighty-three thousand, nine hundred seventy-eight".