1399361 has 2 divisors, whose sum is σ = 1399362. Its totient is φ = 1399360.

The previous prime is 1399357. The next prime is 1399367. The reversal of 1399361 is 1639931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1062961 + 336400 = 1031^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 1399361 - 2² = 1399357 is a prime.

It is a super-2 number, since 2×1399361² = 3916422416642, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1399367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699680 + 699681.

It is an arithmetic number, because the mean of its divisors is an integer number (699681).

2^1399361 is an apocalyptic number.

It is an amenable number.

1399361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1399361 is an equidigital number, since it uses as much as digits as its factorization.

1399361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 32.

The square root of 1399361 is about 1182.9458990165. The cubic root of 1399361 is about 111.8518715648.

The spelling of 1399361 in words is "one million, three hundred ninety-nine thousand, three hundred sixty-one".