38216947 has 4 divisors (see below), whose sum is σ = 38265696. Its totient is φ = 38168200.

The previous prime is 38216917. The next prime is 38216951. The reversal of 38216947 is 74961283.

38216947 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, and also an emirpimes, since its reverse is a distinct semiprime: 74961283 = 79 ⋅948877.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38216947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38216917) 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 3 ways as a sum of consecutive naturals, for example, 23179 + ... + 24772.

It is an arithmetic number, because the mean of its divisors is an integer number (9566424).

Almost surely, 2^38216947 is an apocalyptic number.

38216947 is a deficient number, since it is larger than the sum of its proper divisors (48749).

38216947 is an equidigital number, since it uses as much as digits as its factorization.

38216947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48748.

The product of its digits is 72576, while the sum is 40.

The square root of 38216947 is about 6181.9856842280. The cubic root of 38216947 is about 336.8361256276.

The spelling of 38216947 in words is "thirty-eight million, two hundred sixteen thousand, nine hundred forty-seven".