39378769389 has 6 divisors (see below), whose sum is σ = 56880444686. Its totient is φ = 26252512920.

The previous prime is 39378769363. The next prime is 39378769399. The reversal of 39378769389 is 98396787393.

39378769389 is a `hidden beast` number, since 393 + 7 + 8 + 76 + 93 + 89 = 666.

39378769389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 32416202025 + 6962567364 = 180045^2 + 83442^2 .

It is not a de Polignac number, because 39378769389 - 2¹⁶ = 39378703853 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 (39378769399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2187709402 + ... + 2187709419.

Almost surely, 2^39378769389 is an apocalyptic number.

It is an amenable number.

39378769389 is a deficient number, since it is larger than the sum of its proper divisors (17501675297).

39378769389 is a wasteful number, since it uses less digits than its factorization.

39378769389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4375418827 (or 4375418824 counting only the distinct ones).

The product of its digits is 370355328, while the sum is 72.

The spelling of 39378769389 in words is "thirty-nine billion, three hundred seventy-eight million, seven hundred sixty-nine thousand, three hundred eighty-nine".