449723928291 has 32 divisors (see below), whose sum is σ = 698977382400. Its totient is φ = 254173524480.

The previous prime is 449723928289. The next prime is 449723928319. The reversal of 449723928291 is 192829327944.

It is not a de Polignac number, because 449723928291 - 2¹ = 449723928289 is a prime.

It is a super-2 number, since 2×449723928291² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (449723928491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3616131 + ... + 3738428.

It is an arithmetic number, because the mean of its divisors is an integer number (21843043200).

Almost surely, 2^449723928291 is an apocalyptic number.

449723928291 is a deficient number, since it is larger than the sum of its proper divisors (249253454109).

449723928291 is a wasteful number, since it uses less digits than its factorization.

449723928291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7354699.

The product of its digits is 15676416, while the sum is 60.

The spelling of 449723928291 in words is "four hundred forty-nine billion, seven hundred twenty-three million, nine hundred twenty-eight thousand, two hundred ninety-one".