8434947 has 4 divisors (see below), whose sum is σ = 11246600. Its totient is φ = 5623296.

The previous prime is 8434913. The next prime is 8434957. The reversal of 8434947 is 7494348.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 8434947 - 2⁷ = 8434819 is a prime.

It is a super-2 number, since 2×8434947² = 142296661785618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8434957) 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, 1405822 + ... + 1405827.

It is an arithmetic number, because the mean of its divisors is an integer number (2811650).

Almost surely, 2^8434947 is an apocalyptic number.

8434947 is a deficient number, since it is larger than the sum of its proper divisors (2811653).

8434947 is a wasteful number, since it uses less digits than its factorization.

8434947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811652.

The product of its digits is 96768, while the sum is 39.

The square root of 8434947 is about 2904.2980218979. The cubic root of 8434947 is about 203.5607861121.

The spelling of 8434947 in words is "eight million, four hundred thirty-four thousand, nine hundred forty-seven".