449139 has 4 divisors (see below), whose sum is σ = 598856. Its totient is φ = 299424.

The previous prime is 449131. The next prime is 449149. The reversal of 449139 is 931944.

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

It is not a de Polignac number, because 449139 - 2³ = 449131 is a prime.

It is a D-number.

It is a Duffinian number.

449139 is a lucky number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (449131) 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, 74854 + ... + 74859.

It is an arithmetic number, because the mean of its divisors is an integer number (149714).

2⁴⁴⁹¹³⁹ is an apocalyptic number.

449139 is a deficient number, since it is larger than the sum of its proper divisors (149717).

449139 is a wasteful number, since it uses less digits than its factorization.

449139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149716.

The product of its digits is 3888, while the sum is 30.

The square root of 449139 is about 670.1783344752. The cubic root of 449139 is about 76.5820385231.

The spelling of 449139 in words is "four hundred forty-nine thousand, one hundred thirty-nine".