1449409 has 4 divisors (see below), whose sum is σ = 1560916. Its totient is φ = 1337904.

The previous prime is 1449389. The next prime is 1449431. The reversal of 1449409 is 9049441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 138384 + 1311025 = 372^2 + 1145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1449409 - 2¹³ = 1441217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1449439) 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, 55734 + ... + 55759.

It is an arithmetic number, because the mean of its divisors is an integer number (390229).

2^1449409 is an apocalyptic number.

It is an amenable number.

1449409 is a deficient number, since it is larger than the sum of its proper divisors (111507).

1449409 is a wasteful number, since it uses less digits than its factorization.

1449409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111506.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1449409 is about 1203.9140334758. The cubic root of 1449409 is about 113.1697399421.

It can be divided in two parts, 144 and 9409, that multiplied together give a square (1354896 = 1164²).

The spelling of 1449409 in words is "one million, four hundred forty-nine thousand, four hundred nine".