449681231 has 4 divisors (see below), whose sum is σ = 449752464. Its totient is φ = 449610000.

The previous prime is 449681213. The next prime is 449681237. The reversal of 449681231 is 132186944.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 449681231 - 2¹⁰ = 449680207 is a prime.

It is a super-2 number, since 2×449681231² = 404426419027350722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449681237) 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, 25115 + ... + 39116.

It is an arithmetic number, because the mean of its divisors is an integer number (112438116).

Almost surely, 2^449681231 is an apocalyptic number.

449681231 is a deficient number, since it is larger than the sum of its proper divisors (71233).

449681231 is an equidigital number, since it uses as much as digits as its factorization.

449681231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71232.

The product of its digits is 41472, while the sum is 38.

The square root of 449681231 is about 21205.6886471532. The cubic root of 449681231 is about 766.1284446944.

The spelling of 449681231 in words is "four hundred forty-nine million, six hundred eighty-one thousand, two hundred thirty-one".