450100991 has 8 divisors (see below), whose sum is σ = 456634464. Its totient is φ = 443577600.

The previous prime is 450100943. The next prime is 450101017. The reversal of 450100991 is 199001054.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450100991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450109991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175166 + ... + 177716.

It is an arithmetic number, because the mean of its divisors is an integer number (57079308).

Almost surely, 2^450100991 is an apocalyptic number.

450100991 is a deficient number, since it is larger than the sum of its proper divisors (6533473).

450100991 is a wasteful number, since it uses less digits than its factorization.

450100991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5041.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 450100991 is about 21215.5836827555. The cubic root of 450100991 is about 766.3667542952.

The spelling of 450100991 in words is "four hundred fifty million, one hundred thousand, nine hundred ninety-one".