8904257 has 6 divisors (see below), whose sum is σ = 9128454. Its totient is φ = 8685440.

The previous prime is 8904253. The next prime is 8904263. The reversal of 8904257 is 7524098.

It is a happy number.

8904257 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 2984²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1 + 8904256 = 1^2 + 2984^2 .

It is not a de Polignac number, because 8904257 - 2² = 8904253 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8904253) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 968 + ... + 4329.

It is an arithmetic number, because the mean of its divisors is an integer number (1521409).

Almost surely, 2^8904257 is an apocalyptic number.

It is an amenable number.

8904257 is a deficient number, since it is larger than the sum of its proper divisors (224197).

8904257 is an equidigital number, since it uses as much as digits as its factorization.

8904257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5379 (or 5338 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 8904257 is about 2984.0001675603. Note that the first 3 decimals coincide. The cubic root of 8904257 is about 207.2681457326.

The spelling of 8904257 in words is "eight million, nine hundred four thousand, two hundred fifty-seven".