449731 has 4 divisors (see below), whose sum is σ = 452592. Its totient is φ = 446872.

The previous prime is 449699. The next prime is 449741. The reversal of 449731 is 137944.

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 449731 - 2⁵ = 449699 is a prime.

It is a super-2 number, since 2×449731² = 404515944722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 449731.

It is not an unprimeable number, because it can be changed into a prime (449741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (113148).

2⁴⁴⁹⁷³¹ is an apocalyptic number.

449731 is a deficient number, since it is larger than the sum of its proper divisors (2861).

449731 is a wasteful number, since it uses less digits than its factorization.

449731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860.

The product of its digits is 3024, while the sum is 28.

The square root of 449731 is about 670.6198625153. The cubic root of 449731 is about 76.6156707708.

The spelling of 449731 in words is "four hundred forty-nine thousand, seven hundred thirty-one".