450440639 has 8 divisors (see below), whose sum is σ = 491546880. Its totient is φ = 409360600.

The previous prime is 450440611. The next prime is 450440651. The reversal of 450440639 is 936044054.

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

It is not a de Polignac number, because 450440639 - 2¹² = 450436543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 450440599 and 450440608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450446639) 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, 52922 + ... + 60840.

It is an arithmetic number, because the mean of its divisors is an integer number (61443360).

Almost surely, 2^450440639 is an apocalyptic number.

450440639 is a deficient number, since it is larger than the sum of its proper divisors (41106241).

450440639 is a wasteful number, since it uses less digits than its factorization.

450440639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13101.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 450440639 is about 21223.5868551949. The cubic root of 450440639 is about 766.5594736291.

The spelling of 450440639 in words is "four hundred fifty million, four hundred forty thousand, six hundred thirty-nine".