1398049 has 2 divisors, whose sum is σ = 1398050. Its totient is φ = 1398048.

The previous prime is 1398043. The next prime is 1398053. The reversal of 1398049 is 9408931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1380625 + 17424 = 1175^2 + 132^2 .

It is a cyclic number.

It is not a de Polignac number, because 1398049 - 2⁵ = 1398017 is a prime.

It is not a weakly prime, because it can be changed into another prime (1398043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699024 + 699025.

It is an arithmetic number, because the mean of its divisors is an integer number (699025).

2^1398049 is an apocalyptic number.

It is an amenable number.

1398049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398049 is an equidigital number, since it uses as much as digits as its factorization.

1398049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1398049 is about 1182.3912212123. The cubic root of 1398049 is about 111.8169042852.

The spelling of 1398049 in words is "one million, three hundred ninety-eight thousand, forty-nine".