449291993409 has 24 divisors (see below), whose sum is σ = 741714442560. Its totient is φ = 256729256928.

The previous prime is 449291993383. The next prime is 449291993443. The reversal of 449291993409 is 904399192944.

449291993409 is a `hidden beast` number, since 4 + 492 + 9 + 19 + 93 + 40 + 9 = 666.

It is not a de Polignac number, because 449291993409 - 2⁷ = 449291993281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (449291993009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1952182 + ... + 2170160.

It is an arithmetic number, because the mean of its divisors is an integer number (30904768440).

Almost surely, 2^449291993409 is an apocalyptic number.

It is an amenable number.

449291993409 is a deficient number, since it is larger than the sum of its proper divisors (292422449151).

449291993409 is a wasteful number, since it uses less digits than its factorization.

449291993409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250709 (or 250706 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 63.

The spelling of 449291993409 in words is "four hundred forty-nine billion, two hundred ninety-one million, nine hundred ninety-three thousand, four hundred nine".