1399329 has 8 divisors (see below), whose sum is σ = 2073120. Its totient is φ = 932868.

The previous prime is 1399319. The next prime is 1399351. The reversal of 1399329 is 9239931.

It is not a de Polignac number, because 1399329 - 2⁷ = 1399201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1399293 and 1399302.

It is not an unprimeable number, because it can be changed into a prime (1399319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25887 + ... + 25940.

It is an arithmetic number, because the mean of its divisors is an integer number (259140).

2^1399329 is an apocalyptic number.

It is an amenable number.

1399329 is a deficient number, since it is larger than the sum of its proper divisors (673791).

1399329 is an equidigital number, since it uses as much as digits as its factorization.

1399329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51836 (or 51830 counting only the distinct ones).

The product of its digits is 13122, while the sum is 36.

The square root of 1399329 is about 1182.9323733840. The cubic root of 1399329 is about 111.8510189644.

It can be divided in two parts, 1399 and 329, that added together give a cube (1728 = 12³).

The spelling of 1399329 in words is "one million, three hundred ninety-nine thousand, three hundred twenty-nine".