1389351284 has 6 divisors (see below), whose sum is σ = 2431364754. Its totient is φ = 694675640.

The previous prime is 1389351283. The next prime is 1389351289. The reversal of 1389351284 is 4821539831.

It can be written as a sum of positive squares in only one way, i.e., 1117431184 + 271920100 = 33428^2 + 16490^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389351283) 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, 173668907 + ... + 173668914.

It is an arithmetic number, because the mean of its divisors is an integer number (405227459).

Almost surely, 2^1389351284 is an apocalyptic number.

It is an amenable number.

1389351284 is a deficient number, since it is larger than the sum of its proper divisors (1042013470).

1389351284 is a wasteful number, since it uses less digits than its factorization.

1389351284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347337825 (or 347337823 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 1389351284 is about 37274.0027901485. The cubic root of 1389351284 is about 1115.8453867416.

The spelling of 1389351284 in words is "one billion, three hundred eighty-nine million, three hundred fifty-one thousand, two hundred eighty-four".