450398887 has 4 divisors (see below), whose sum is σ = 451653840. Its totient is φ = 449143936.

The previous prime is 450398881. The next prime is 450398939. The reversal of 450398887 is 788893054.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450398887 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 (450398881) 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, 626938 + ... + 627655.

It is an arithmetic number, because the mean of its divisors is an integer number (112913460).

Almost surely, 2^450398887 is an apocalyptic number.

450398887 is a deficient number, since it is larger than the sum of its proper divisors (1254953).

450398887 is a wasteful number, since it uses less digits than its factorization.

450398887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254952.

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 450398887 is about 21222.6032097856. The cubic root of 450398887 is about 766.5357883920.

The spelling of 450398887 in words is "four hundred fifty million, three hundred ninety-eight thousand, eight hundred eighty-seven".