449723928491 has 2 divisors, whose sum is σ = 449723928492. Its totient is φ = 449723928490.

The previous prime is 449723928487. The next prime is 449723928523. The reversal of 449723928491 is 194829327944.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 449723928491 - 2² = 449723928487 is a prime.

It is a super-2 number, since 2×449723928491² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (449723958491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224861964245 + 224861964246.

It is an arithmetic number, because the mean of its divisors is an integer number (224861964246).

Almost surely, 2^449723928491 is an apocalyptic number.

449723928491 is a deficient number, since it is larger than the sum of its proper divisors (1).

449723928491 is an equidigital number, since it uses as much as digits as its factorization.

449723928491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31352832, while the sum is 62.

The spelling of 449723928491 in words is "four hundred forty-nine billion, seven hundred twenty-three million, nine hundred twenty-eight thousand, four hundred ninety-one".