1399449 has 4 divisors (see below), whose sum is σ = 1865936. Its totient is φ = 932964.

The previous prime is 1399441. The next prime is 1399469. The reversal of 1399449 is 9449931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1399449 - 2³ = 1399441 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1399441) 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 3 ways as a sum of consecutive naturals, for example, 233239 + ... + 233244.

It is an arithmetic number, because the mean of its divisors is an integer number (466484).

2^1399449 is an apocalyptic number.

It is an amenable number.

1399449 is a deficient number, since it is larger than the sum of its proper divisors (466487).

1399449 is an equidigital number, since it uses as much as digits as its factorization.

1399449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466486.

The product of its digits is 34992, while the sum is 39.

The square root of 1399449 is about 1182.9830937084. The cubic root of 1399449 is about 111.8542161488.

The spelling of 1399449 in words is "one million, three hundred ninety-nine thousand, four hundred forty-nine".