1398761027 has 2 divisors, whose sum is σ = 1398761028. Its totient is φ = 1398761026.

The previous prime is 1398761017. The next prime is 1398761051. The reversal of 1398761027 is 7201678931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1398761027 - 2³⁰ = 325019203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1398761017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699380513 + 699380514.

It is an arithmetic number, because the mean of its divisors is an integer number (699380514).

Almost surely, 2^1398761027 is an apocalyptic number.

1398761027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398761027 is an equidigital number, since it uses as much as digits as its factorization.

1398761027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 1398761027 is about 37400.0137299440. The cubic root of 1398761027 is about 1118.3588386375.

The spelling of 1398761027 in words is "one billion, three hundred ninety-eight million, seven hundred sixty-one thousand, twenty-seven".