449326721 has 8 divisors (see below), whose sum is σ = 460684800. Its totient is φ = 438043648.

The previous prime is 449326637. The next prime is 449326727. The reversal of 449326721 is 127623944.

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

It is a cyclic number.

It is not a de Polignac number, because 449326721 - 2¹⁰ = 449325697 is a prime.

It is a super-2 number, since 2×449326721² = 403789004409223682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449326727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6521 + ... + 30678.

It is an arithmetic number, because the mean of its divisors is an integer number (57585600).

Almost surely, 2^449326721 is an apocalyptic number.

It is an amenable number.

449326721 is a deficient number, since it is larger than the sum of its proper divisors (11358079).

449326721 is a wasteful number, since it uses less digits than its factorization.

449326721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37503.

The product of its digits is 72576, while the sum is 38.

The square root of 449326721 is about 21197.3281571051. The cubic root of 449326721 is about 765.9270638197.

The spelling of 449326721 in words is "four hundred forty-nine million, three hundred twenty-six thousand, seven hundred twenty-one".