8957217 has 4 divisors (see below), whose sum is σ = 11942960. Its totient is φ = 5971476.

The previous prime is 8957167. The next prime is 8957231. The reversal of 8957217 is 7127598.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8957217 - 2⁶ = 8957153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8957917) 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, 1492867 + ... + 1492872.

It is an arithmetic number, because the mean of its divisors is an integer number (2985740).

Almost surely, 2^8957217 is an apocalyptic number.

It is an amenable number.

8957217 is a deficient number, since it is larger than the sum of its proper divisors (2985743).

8957217 is a wasteful number, since it uses less digits than its factorization.

8957217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985742.

The product of its digits is 35280, while the sum is 39.

The square root of 8957217 is about 2992.8610057936. The cubic root of 8957217 is about 207.6782578129.

The spelling of 8957217 in words is "eight million, nine hundred fifty-seven thousand, two hundred seventeen".