454987999 has 4 divisors (see below), whose sum is σ = 462699720. Its totient is φ = 447276280.

The previous prime is 454987991. The next prime is 454988057. The reversal of 454987999 is 999789454.

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

It is a cyclic number.

It is not a de Polignac number, because 454987999 - 2³ = 454987991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 454987999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454987991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3855772 + ... + 3855889.

It is an arithmetic number, because the mean of its divisors is an integer number (115674930).

Almost surely, 2^454987999 is an apocalyptic number.

454987999 is a deficient number, since it is larger than the sum of its proper divisors (7711721).

454987999 is an equidigital number, since it uses as much as digits as its factorization.

454987999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7711720.

The product of its digits is 29393280, while the sum is 64.

The square root of 454987999 is about 21330.4476980677. The cubic root of 454987999 is about 769.1304058298.

The spelling of 454987999 in words is "four hundred fifty-four million, nine hundred eighty-seven thousand, nine hundred ninety-nine".