9090247 has 2 divisors, whose sum is σ = 9090248. Its totient is φ = 9090246.

The previous prime is 9090241. The next prime is 9090251. The reversal of 9090247 is 7420909.

9090247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9090247 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9090241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4545123 + 4545124.

It is an arithmetic number, because the mean of its divisors is an integer number (4545124).

Almost surely, 2^9090247 is an apocalyptic number.

9090247 is a deficient number, since it is larger than the sum of its proper divisors (1).

9090247 is an equidigital number, since it uses as much as digits as its factorization.

9090247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 9090247 is about 3015.0036484223. The cubic root of 9090247 is about 208.7013354236.

The spelling of 9090247 in words is "nine million, ninety thousand, two hundred forty-seven".