8990257 has 2 divisors, whose sum is σ = 8990258. Its totient is φ = 8990256.

The previous prime is 8990239. The next prime is 8990321. The reversal of 8990257 is 7520998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5948721 + 3041536 = 2439^2 + 1744^2 .

It is a cyclic number.

It is not a de Polignac number, because 8990257 - 2¹¹ = 8988209 is a prime.

It is not a weakly prime, because it can be changed into another prime (8999257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4495128 + 4495129.

It is an arithmetic number, because the mean of its divisors is an integer number (4495129).

Almost surely, 2^8990257 is an apocalyptic number.

It is an amenable number.

8990257 is a deficient number, since it is larger than the sum of its proper divisors (1).

8990257 is an equidigital number, since it uses as much as digits as its factorization.

8990257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 8990257 is about 2998.3757269562. The cubic root of 8990257 is about 207.9332949933.

The spelling of 8990257 in words is "eight million, nine hundred ninety thousand, two hundred fifty-seven".