449143249 has 3 divisors (see below), whose sum is σ = 449164443. Its totient is φ = 449122056.

The previous prime is 449143229. The next prime is 449143291. The reversal of 449143249 is 942341944.

The square root of 449143249 is 21193.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 15171025 + 433972224 = 3895^2 + 20832^2 .

It is not a de Polignac number, because 449143249 - 2¹¹ = 449141201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449143229) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 10597 + ... + 31789.

It is an arithmetic number, because the mean of its divisors is an integer number (149721481).

Almost surely, 2^449143249 is an apocalyptic number.

449143249 is the 21193-rd square number.

449143249 is the 10597-th centered octagonal number.

It is an amenable number.

449143249 is a deficient number, since it is larger than the sum of its proper divisors (21194).

449143249 is an frugal number, since it uses more digits than its factorization.

449143249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42386 (or 21193 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The cubic root of 449143249 is about 765.8228001923.

The spelling of 449143249 in words is "four hundred forty-nine million, one hundred forty-three thousand, two hundred forty-nine".