454665891 has 4 divisors (see below), whose sum is σ = 606221192. Its totient is φ = 303110592.

The previous prime is 454665889. The next prime is 454665899. The reversal of 454665891 is 198566454.

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

It is not a de Polignac number, because 454665891 - 2¹ = 454665889 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 454665891.

It is not an unprimeable number, because it can be changed into a prime (454665899) 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, 75777646 + ... + 75777651.

It is an arithmetic number, because the mean of its divisors is an integer number (151555298).

Almost surely, 2^454665891 is an apocalyptic number.

454665891 is a deficient number, since it is larger than the sum of its proper divisors (151555301).

454665891 is a wasteful number, since it uses less digits than its factorization.

454665891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151555300.

The product of its digits is 1036800, while the sum is 48.

The square root of 454665891 is about 21322.8959337141. The cubic root of 454665891 is about 768.9488614495.

The spelling of 454665891 in words is "four hundred fifty-four million, six hundred sixty-five thousand, eight hundred ninety-one".