449091 has 8 divisors (see below), whose sum is σ = 665360. Its totient is φ = 299376.

The previous prime is 449083. The next prime is 449093. The reversal of 449091 is 190944.

It is not a de Polignac number, because 449091 - 2³ = 449083 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 16633 = 449091 / (4 + 4 + 9 + 0 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8290 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (83170).

2⁴⁴⁹⁰⁹¹ is an apocalyptic number.

449091 is a deficient number, since it is larger than the sum of its proper divisors (216269).

449091 is a wasteful number, since it uses less digits than its factorization.

449091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16642 (or 16636 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 449091 is about 670.1425221548. The cubic root of 449091 is about 76.5793102891.

It can be divided in two parts, 44 and 9091, that multiplied together give a palindrome (400004).

The spelling of 449091 in words is "four hundred forty-nine thousand, ninety-one".