450859981 has 8 divisors (see below), whose sum is σ = 529681824. Its totient is φ = 378343920.

The previous prime is 450859979. The next prime is 450859993. The reversal of 450859981 is 189958054.

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

It is a cyclic number.

It is not a de Polignac number, because 450859981 - 2¹ = 450859979 is a prime.

It is a super-2 number, since 2×450859981² = 406549444934640722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450859921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576291 + ... + 1576576.

It is an arithmetic number, because the mean of its divisors is an integer number (66210228).

Almost surely, 2^450859981 is an apocalyptic number.

It is an amenable number.

450859981 is a deficient number, since it is larger than the sum of its proper divisors (78821843).

450859981 is a wasteful number, since it uses less digits than its factorization.

450859981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152891.

The product of its (nonzero) digits is 518400, while the sum is 49.

The square root of 450859981 is about 21233.4637070827. The cubic root of 450859981 is about 766.7972784614.

The spelling of 450859981 in words is "four hundred fifty million, eight hundred fifty-nine thousand, nine hundred eighty-one".