1398079 has 2 divisors, whose sum is σ = 1398080. Its totient is φ = 1398078.

The previous prime is 1398053. The next prime is 1398083. The reversal of 1398079 is 9708931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1398079 - 2⁷ = 1397951 is a prime.

It is a Chen prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1398049) 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 as a sum of consecutive naturals, namely, 699039 + 699040.

It is an arithmetic number, because the mean of its divisors is an integer number (699040).

2^1398079 is an apocalyptic number.

1398079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398079 is an equidigital number, since it uses as much as digits as its factorization.

1398079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1398079 is about 1182.4039073007. The cubic root of 1398079 is about 111.8177040862.

The spelling of 1398079 in words is "one million, three hundred ninety-eight thousand, seventy-nine".