1389785359 has 8 divisors (see below), whose sum is σ = 1395936000. Its totient is φ = 1383649176.

The previous prime is 1389785329. The next prime is 1389785401. The reversal of 1389785359 is 9535879831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1389785359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389785329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217914 + ... + 224200.

It is an arithmetic number, because the mean of its divisors is an integer number (174492000).

Almost surely, 2^1389785359 is an apocalyptic number.

1389785359 is a deficient number, since it is larger than the sum of its proper divisors (6150641).

1389785359 is an equidigital number, since it uses as much as digits as its factorization.

1389785359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7229.

The product of its digits is 8164800, while the sum is 58.

The square root of 1389785359 is about 37279.8250934738. The cubic root of 1389785359 is about 1115.9615824937.

The spelling of 1389785359 in words is "one billion, three hundred eighty-nine million, seven hundred eighty-five thousand, three hundred fifty-nine".