1389198344 has 16 divisors (see below), whose sum is σ = 2717997120. Its totient is φ = 664399120.

The previous prime is 1389198341. The next prime is 1389198361. The reversal of 1389198344 is 4438919831.

It is a junction number, because it is equal to n+sod(n) for n = 1389198292 and 1389198301.

It is not an unprimeable number, because it can be changed into a prime (1389198341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3774812 + ... + 3775179.

It is an arithmetic number, because the mean of its divisors is an integer number (169874820).

Almost surely, 2^1389198344 is an apocalyptic number.

It is an amenable number.

1389198344 is a deficient number, since it is larger than the sum of its proper divisors (1328798776).

1389198344 is a wasteful number, since it uses less digits than its factorization.

1389198344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7550020 (or 7550016 counting only the distinct ones).

The product of its digits is 746496, while the sum is 50.

The square root of 1389198344 is about 37271.9511697469. The cubic root of 1389198344 is about 1115.8044410960.

The spelling of 1389198344 in words is "one billion, three hundred eighty-nine million, one hundred ninety-eight thousand, three hundred forty-four".