8947738 has 4 divisors (see below), whose sum is σ = 13421610. Its totient is φ = 4473868.

The previous prime is 8947723. The next prime is 8947751. The reversal of 8947738 is 8377498.

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., 8720209 + 227529 = 2953^2 + 477^2 .

It is a d-powerful number, because it can be written as 8 + 9 + 4⁹ + 7⁷ + 7⁸ + 3⁴ + 8⁷ .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2236933 + ... + 2236936.

Almost surely, 2^8947738 is an apocalyptic number.

8947738 is a deficient number, since it is larger than the sum of its proper divisors (4473872).

8947738 is a wasteful number, since it uses less digits than its factorization.

8947738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4473871.

The product of its digits is 338688, while the sum is 46.

The square root of 8947738 is about 2991.2769848344. The cubic root of 8947738 is about 207.6049732561.

The spelling of 8947738 in words is "eight million, nine hundred forty-seven thousand, seven hundred thirty-eight".