450439964 has 24 divisors (see below), whose sum is σ = 868652400. Its totient is φ = 203059584.

The previous prime is 450439937. The next prime is 450439999. The reversal of 450439964 is 469934054.

It is a happy number.

It is a super-2 number, since 2×450439964² = 405792322336642592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98489 + ... + 102960.

It is an arithmetic number, because the mean of its divisors is an integer number (36193850).

Almost surely, 2^450439964 is an apocalyptic number.

It is an amenable number.

450439964 is a deficient number, since it is larger than the sum of its proper divisors (418212436).

450439964 is a wasteful number, since it uses less digits than its factorization.

450439964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201509 (or 201507 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 450439964 is about 21223.5709530701. The cubic root of 450439964 is about 766.5590907241.

The spelling of 450439964 in words is "four hundred fifty million, four hundred thirty-nine thousand, nine hundred sixty-four".