1399265 has 8 divisors (see below), whose sum is σ = 1919040. Its totient is φ = 959472.

The previous prime is 1399261. The next prime is 1399271. The reversal of 1399265 is 5629931.

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 1399265 - 2² = 1399261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 39979 = 1399265 / (1 + 3 + 9 + 9 + 2 + 6 + 5).

It is not an unprimeable number, because it can be changed into a prime (1399261) 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, 19955 + ... + 20024.

It is an arithmetic number, because the mean of its divisors is an integer number (239880).

2^1399265 is an apocalyptic number.

It is an amenable number.

1399265 is a deficient number, since it is larger than the sum of its proper divisors (519775).

1399265 is an equidigital number, since it uses as much as digits as its factorization.

1399265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39991.

The product of its digits is 14580, while the sum is 35.

The square root of 1399265 is about 1182.9053216551. The cubic root of 1399265 is about 111.8493137247.

It can be divided in two parts, 139926 and 5, that added together give a palindrome (139931).

The spelling of 1399265 in words is "one million, three hundred ninety-nine thousand, two hundred sixty-five".