450881993 has 8 divisors (see below), whose sum is σ = 458601600. Its totient is φ = 443212848.

The previous prime is 450881987. The next prime is 450881999. The reversal of 450881993 is 399188054.

It is an interprime number because it is at equal distance from previous prime (450881987) and next prime (450881999).

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 450881993 - 2¹² = 450877897 is a prime.

It is a super-2 number, since 2×450881993² = 406589143223304098, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (450881999) 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, 5630 + ... + 30552.

It is an arithmetic number, because the mean of its divisors is an integer number (57325200).

Almost surely, 2^450881993 is an apocalyptic number.

It is an amenable number.

450881993 is a deficient number, since it is larger than the sum of its proper divisors (7719607).

450881993 is a wasteful number, since it uses less digits than its factorization.

450881993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25231.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 450881993 is about 21233.9820335235. The cubic root of 450881993 is about 766.8097571819.

The spelling of 450881993 in words is "four hundred fifty million, eight hundred eighty-one thousand, nine hundred ninety-three".