455668999 has 4 divisors (see below), whose sum is σ = 455716800. Its totient is φ = 455621200.

The previous prime is 455668981. The next prime is 455669021. The reversal of 455668999 is 999866554.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 999866554 = 2 ⋅499933277.

It is a cyclic number.

It is not a de Polignac number, because 455668999 - 2⁹ = 455668487 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455668399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4174 + ... + 30475.

It is an arithmetic number, because the mean of its divisors is an integer number (113929200).

Almost surely, 2^455668999 is an apocalyptic number.

455668999 is a deficient number, since it is larger than the sum of its proper divisors (47801).

455668999 is a wasteful number, since it uses less digits than its factorization.

455668999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47800.

The product of its digits is 20995200, while the sum is 61.

The square root of 455668999 is about 21346.4048261060. The cubic root of 455668999 is about 769.5139446662.

The spelling of 455668999 in words is "four hundred fifty-five million, six hundred sixty-eight thousand, nine hundred ninety-nine".