449145 has 20 divisors (see below), whose sum is σ = 805860. Its totient is φ = 239328.

The previous prime is 449131. The next prime is 449149. The reversal of 449145 is 541944.

449145 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in 2 ways, for example, as 63504 + 385641 = 252^2 + 621^2 .

It is not a de Polignac number, because 449145 - 2⁴ = 449129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Curzon number.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449149) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 150 + ... + 959.

It is an arithmetic number, because the mean of its divisors is an integer number (40293).

2⁴⁴⁹¹⁴⁵ is an apocalyptic number.

449145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

449145 is a deficient number, since it is larger than the sum of its proper divisors (356715).

449145 is a wasteful number, since it uses less digits than its factorization.

449145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126 (or 1117 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 449145 is about 670.1828108807. The cubic root of 449145 is about 76.5823795386.

The spelling of 449145 in words is "four hundred forty-nine thousand, one hundred forty-five".