38786947 has 4 divisors (see below), whose sum is σ = 40473360. Its totient is φ = 37100536.

The previous prime is 38786941. The next prime is 38786953. The reversal of 38786947 is 74968783.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74968783 = 109 ⋅687787.

It is an interprime number because it is at equal distance from previous prime (38786941) and next prime (38786953).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38786947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38786894 and 38786903.

It is not an unprimeable number, because it can be changed into a prime (38786941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843172 + ... + 843217.

It is an arithmetic number, because the mean of its divisors is an integer number (10118340).

Almost surely, 2^38786947 is an apocalyptic number.

38786947 is a deficient number, since it is larger than the sum of its proper divisors (1686413).

38786947 is a wasteful number, since it uses less digits than its factorization.

38786947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686412.

The product of its digits is 2032128, while the sum is 52.

The square root of 38786947 is about 6227.9167463928. The cubic root of 38786947 is about 338.5024883689.

The spelling of 38786947 in words is "thirty-eight million, seven hundred eighty-six thousand, nine hundred forty-seven".