1449991 has 4 divisors (see below), whose sum is σ = 1458184. Its totient is φ = 1441800.

The previous prime is 1449983. The next prime is 1450019. The reversal of 1449991 is 1999441.

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 1449991 - 2³ = 1449983 is a prime.

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 1449991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1449911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3825 + ... + 4186.

It is an arithmetic number, because the mean of its divisors is an integer number (364546).

2^1449991 is an apocalyptic number.

1449991 is a deficient number, since it is larger than the sum of its proper divisors (8193).

1449991 is an equidigital number, since it uses as much as digits as its factorization.

1449991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8192.

The product of its digits is 11664, while the sum is 37.

The square root of 1449991 is about 1204.1557208268. The cubic root of 1449991 is about 113.1848854197.

It can be divided in two parts, 14 and 49991, that added together give a palindrome (50005).

The spelling of 1449991 in words is "one million, four hundred forty-nine thousand, nine hundred ninety-one".