449798569 has 4 divisors (see below), whose sum is σ = 490689360. Its totient is φ = 408907780.

The previous prime is 449798549. The next prime is 449798581. The reversal of 449798569 is 965897944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449798569 - 2⁷ = 449798441 is a prime.

It is a super-2 number, since 2×449798569² = 404637505348895522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449798509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20445379 + ... + 20445400.

It is an arithmetic number, because the mean of its divisors is an integer number (122672340).

Almost surely, 2^449798569 is an apocalyptic number.

It is an amenable number.

449798569 is a deficient number, since it is larger than the sum of its proper divisors (40890791).

449798569 is a wasteful number, since it uses less digits than its factorization.

449798569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40890790.

The product of its digits is 19595520, while the sum is 61.

The square root of 449798569 is about 21208.4551299712. The cubic root of 449798569 is about 766.1950757176.

The spelling of 449798569 in words is "four hundred forty-nine million, seven hundred ninety-eight thousand, five hundred sixty-nine".