1389609847 has 2 divisors, whose sum is σ = 1389609848. Its totient is φ = 1389609846.

The previous prime is 1389609841. The next prime is 1389609853. The reversal of 1389609847 is 7489069831.

It is a balanced prime because it is at equal distance from previous prime (1389609841) and next prime (1389609853).

It is a cyclic number.

It is not a de Polignac number, because 1389609847 - 2²³ = 1381221239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389609841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694804923 + 694804924.

It is an arithmetic number, because the mean of its divisors is an integer number (694804924).

Almost surely, 2^1389609847 is an apocalyptic number.

1389609847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389609847 is an equidigital number, since it uses as much as digits as its factorization.

1389609847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 1389609847 is about 37277.4710381485. The cubic root of 1389609847 is about 1115.9146033220.

The spelling of 1389609847 in words is "one billion, three hundred eighty-nine million, six hundred nine thousand, eight hundred forty-seven".