8990217 has 32 divisors (see below), whose sum is σ = 14376960. Its totient is φ = 5536080.

The previous prime is 8990209. The next prime is 8990239. The reversal of 8990217 is 7120998.

It is a happy number.

It is not a de Polignac number, because 8990217 - 2³ = 8990209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8990257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19018 + ... + 19484.

It is an arithmetic number, because the mean of its divisors is an integer number (449280).

Almost surely, 2^8990217 is an apocalyptic number.

It is an amenable number.

8990217 is a deficient number, since it is larger than the sum of its proper divisors (5386743).

8990217 is a wasteful number, since it uses less digits than its factorization.

8990217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 8990217 is about 2998.3690566706. The cubic root of 8990217 is about 207.9329866097.

The spelling of 8990217 in words is "eight million, nine hundred ninety thousand, two hundred seventeen".