1398449 has 8 divisors (see below), whose sum is σ = 1522920. Its totient is φ = 1276416.

The previous prime is 1398427. The next prime is 1398451. The reversal of 1398449 is 9448931.

It can be written as a sum of positive squares in 4 ways, for example, as 34225 + 1364224 = 185^2 + 1168^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1398449 - 2¹⁶ = 1332913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707 + ... + 1815.

It is an arithmetic number, because the mean of its divisors is an integer number (190365).

2^1398449 is an apocalyptic number.

It is an amenable number.

1398449 is a deficient number, since it is larger than the sum of its proper divisors (124471).

1398449 is a wasteful number, since it uses less digits than its factorization.

1398449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219.

The product of its digits is 31104, while the sum is 38.

The square root of 1398449 is about 1182.5603578676. The cubic root of 1398449 is about 111.8275673585.

The spelling of 1398449 in words is "one million, three hundred ninety-eight thousand, four hundred forty-nine".