1399479 has 8 divisors (see below), whose sum is σ = 1871472. Its totient is φ = 930240.

The previous prime is 1399477. The next prime is 1399493. The reversal of 1399479 is 9749931.

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

It is not a de Polignac number, because 1399479 - 2¹ = 1399477 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1399479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459 + ... + 2219.

It is an arithmetic number, because the mean of its divisors is an integer number (233934).

2^1399479 is an apocalyptic number.

1399479 is a deficient number, since it is larger than the sum of its proper divisors (471993).

1399479 is an equidigital number, since it uses as much as digits as its factorization.

1399479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377.

The product of its digits is 61236, while the sum is 42.

The square root of 1399479 is about 1182.9957734498. The cubic root of 1399479 is about 111.8550154164.

The spelling of 1399479 in words is "one million, three hundred ninety-nine thousand, four hundred seventy-nine".