39378387 has 6 divisors (see below), whose sum is σ = 52519012. Its totient is φ = 26245012.

The previous prime is 39378373. The next prime is 39378403. The reversal of 39378387 is 78387393.

It is not a de Polignac number, because 39378387 - 2¹⁰ = 39377363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39378337) 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, 9058 + ... + 12680.

Almost surely, 2^39378387 is an apocalyptic number.

39378387 is a deficient number, since it is larger than the sum of its proper divisors (13140625).

39378387 is an frugal number, since it uses more digits than its factorization.

39378387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7249 (or 3626 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 39378387 is about 6275.2200758220. The cubic root of 39378387 is about 340.2143602100.

Multiplying 39378387 by its sum of digits (48), we get a square (1890162576 = 43476²).

Multiplying 39378387 by its product of digits (762048), we get a square (30008221056576 = 5477976²).

The spelling of 39378387 in words is "thirty-nine million, three hundred seventy-eight thousand, three hundred eighty-seven".