39478394 has 4 divisors (see below), whose sum is σ = 59217594. Its totient is φ = 19739196.

The previous prime is 39478379. The next prime is 39478423. The reversal of 39478394 is 49387493.

39478394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27952369 + 11526025 = 5287^2 + 3395^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9869597 + ... + 9869600.

Almost surely, 2^39478394 is an apocalyptic number.

39478394 is a deficient number, since it is larger than the sum of its proper divisors (19739200).

39478394 is a wasteful number, since it uses less digits than its factorization.

39478394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19739199.

The product of its digits is 653184, while the sum is 47.

The square root of 39478394 is about 6283.1834288042. The cubic root of 39478394 is about 340.5021242850.

Subtracting 39478394 from its reverse (49387493), we obtain a palindrome (9909099).

The spelling of 39478394 in words is "thirty-nine million, four hundred seventy-eight thousand, three hundred ninety-four".