1389401289 has 16 divisors (see below), whose sum is σ = 2059033600. Its totient is φ = 925969968.

The previous prime is 1389401269. The next prime is 1389401303. The reversal of 1389401289 is 9821049831.

It is not a de Polignac number, because 1389401289 - 2⁵ = 1389401257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389401219) 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 in 15 ways as a sum of consecutive naturals, for example, 106107 + ... + 118479.

It is an arithmetic number, because the mean of its divisors is an integer number (128689600).

Almost surely, 2^1389401289 is an apocalyptic number.

It is an amenable number.

1389401289 is a deficient number, since it is larger than the sum of its proper divisors (669632311).

1389401289 is a wasteful number, since it uses less digits than its factorization.

1389401289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16541 (or 16535 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1389401289 is about 37274.6735599388. The cubic root of 1389401289 is about 1115.8587736078.

The spelling of 1389401289 in words is "one billion, three hundred eighty-nine million, four hundred one thousand, two hundred eighty-nine".