450239986 has 16 divisors (see below), whose sum is σ = 779336064. Its totient is φ = 191085984.

The previous prime is 450239981. The next prime is 450240023. The reversal of 450239986 is 689932054.

It is not an unprimeable number, because it can be changed into a prime (450239981) 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 7 ways as a sum of consecutive naturals, for example, 154675 + ... + 157558.

It is an arithmetic number, because the mean of its divisors is an integer number (48708504).

Almost surely, 2^450239986 is an apocalyptic number.

450239986 is a deficient number, since it is larger than the sum of its proper divisors (329096078).

450239986 is a wasteful number, since it uses less digits than its factorization.

450239986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312345.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 450239986 is about 21218.8592059045. The cubic root of 450239986 is about 766.4456330255.

The spelling of 450239986 in words is "four hundred fifty million, two hundred thirty-nine thousand, nine hundred eighty-six".