1396999 has 2 divisors, whose sum is σ = 1397000. Its totient is φ = 1396998.

The previous prime is 1396991. The next prime is 1397021. The reversal of 1396999 is 9996931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1396999 - 2³ = 1396991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698499 + 698500.

It is an arithmetic number, because the mean of its divisors is an integer number (698500).

2^1396999 is an apocalyptic number.

1396999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396999 is an equidigital number, since it uses as much as digits as its factorization.

1396999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 118098, while the sum is 46.

The square root of 1396999 is about 1181.9471223367. The cubic root of 1396999 is about 111.7889040375.

The spelling of 1396999 in words is "one million, three hundred ninety-six thousand, nine hundred ninety-nine".