38563947 has 12 divisors (see below), whose sum is σ = 55762720. Its totient is φ = 25681968.

The previous prime is 38563933. The next prime is 38563957. The reversal of 38563947 is 74936583.

38563947 is a `hidden beast` number, since 3 + 8 + 5 + 639 + 4 + 7 = 666.

It is not a de Polignac number, because 38563947 - 2⁸ = 38563691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38563957) 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, 10329 + ... + 13557.

Almost surely, 2^38563947 is an apocalyptic number.

38563947 is a deficient number, since it is larger than the sum of its proper divisors (17198773).

38563947 is a wasteful number, since it uses less digits than its factorization.

38563947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562 (or 4559 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 38563947 is about 6209.9876811472. The cubic root of 38563947 is about 337.8525172658.

The spelling of 38563947 in words is "thirty-eight million, five hundred sixty-three thousand, nine hundred forty-seven".