8438947 has 8 divisors (see below), whose sum is σ = 9362880. Its totient is φ = 7541160.

The previous prime is 8438929. The next prime is 8438951. The reversal of 8438947 is 7498348.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8438947 - 2¹¹ = 8436899 is a prime.

It is a d-powerful number, because it can be written as 8³ + 4¹¹ + 3⁵ + 8⁵ + 9 + 4¹¹ + 7⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8438917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5853 + ... + 7150.

It is an arithmetic number, because the mean of its divisors is an integer number (1170360).

Almost surely, 2^8438947 is an apocalyptic number.

8438947 is a deficient number, since it is larger than the sum of its proper divisors (923933).

8438947 is a wasteful number, since it uses less digits than its factorization.

8438947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13073.

The product of its digits is 193536, while the sum is 43.

The square root of 8438947 is about 2904.9865748399. The cubic root of 8438947 is about 203.5929583936.

The spelling of 8438947 in words is "eight million, four hundred thirty-eight thousand, nine hundred forty-seven".