451982879 has 4 divisors (see below), whose sum is σ = 461599584. Its totient is φ = 442366176.

The previous prime is 451982857. The next prime is 451982897. The reversal of 451982879 is 978289154.

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 451982879 - 2⁸ = 451982623 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 451982879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451982809) 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, 4808282 + ... + 4808375.

It is an arithmetic number, because the mean of its divisors is an integer number (115399896).

Almost surely, 2^451982879 is an apocalyptic number.

451982879 is a deficient number, since it is larger than the sum of its proper divisors (9616705).

451982879 is an equidigital number, since it uses as much as digits as its factorization.

451982879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9616704.

The product of its digits is 1451520, while the sum is 53.

The square root of 451982879 is about 21259.8889696066. Note that the first 3 decimals coincide. The cubic root of 451982879 is about 767.4333379415.

The spelling of 451982879 in words is "four hundred fifty-one million, nine hundred eighty-two thousand, eight hundred seventy-nine".