1389080349 has 12 divisors (see below), whose sum is σ = 2039342812. Its totient is φ = 910872000.

The previous prime is 1389080317. The next prime is 1389080359. The reversal of 1389080349 is 9430809831.

It can be written as a sum of positive squares in 2 ways, for example, as 17489124 + 1371591225 = 4182^2 + 37035^2 .

It is not a de Polignac number, because 1389080349 - 2⁵ = 1389080317 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 (1389080359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1264552 + ... + 1265649.

Almost surely, 2^1389080349 is an apocalyptic number.

It is an amenable number.

1389080349 is a deficient number, since it is larger than the sum of its proper divisors (650262463).

1389080349 is a wasteful number, since it uses less digits than its factorization.

1389080349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2530268 (or 2530265 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1389080349 is about 37270.3682434183. The cubic root of 1389080349 is about 1115.7728489975.

The spelling of 1389080349 in words is "one billion, three hundred eighty-nine million, eighty thousand, three hundred forty-nine".