39378474 has 20 divisors (see below), whose sum is σ = 88237314. Its totient is φ = 13126104.

The previous prime is 39378473. The next prime is 39378487. The reversal of 39378474 is 47487393.

It is a happy number.

39378474 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., 31843449 + 7535025 = 5643^2 + 2745^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39378473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 121377 + ... + 121700.

Almost surely, 2^39378474 is an apocalyptic number.

39378474 is an abundant number, since it is smaller than the sum of its proper divisors (48858840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39378474 is a wasteful number, since it uses less digits than its factorization.

39378474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243091 (or 243082 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 39378474 is about 6275.2270078460. The cubic root of 39378474 is about 340.2146107589.

The spelling of 39378474 in words is "thirty-nine million, three hundred seventy-eight thousand, four hundred seventy-four".