449638653 has 8 divisors (see below), whose sum is σ = 599637600. Its totient is φ = 299699408.

The previous prime is 449638633. The next prime is 449638681. The reversal of 449638653 is 356836944.

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 449638653 - 2¹⁴ = 449622269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449638603) 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, 7438 + ... + 30896.

It is an arithmetic number, because the mean of its divisors is an integer number (74954700).

Almost surely, 2^449638653 is an apocalyptic number.

It is an amenable number.

449638653 is a deficient number, since it is larger than the sum of its proper divisors (149998947).

449638653 is a wasteful number, since it uses less digits than its factorization.

449638653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29851.

The product of its digits is 1866240, while the sum is 48.

The square root of 449638653 is about 21204.6846946612. The cubic root of 449638653 is about 766.1042636789.

The spelling of 449638653 in words is "four hundred forty-nine million, six hundred thirty-eight thousand, six hundred fifty-three".