10440247 has 2 divisors, whose sum is σ = 10440248. Its totient is φ = 10440246.

The previous prime is 10440239. The next prime is 10440259. The reversal of 10440247 is 74204401.

It is a weak prime.

It is an emirp because it is prime and its reverse (74204401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10440247 - 2³ = 10440239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10440217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5220123 + 5220124.

It is an arithmetic number, because the mean of its divisors is an integer number (5220124).

Almost surely, 2^10440247 is an apocalyptic number.

10440247 is a deficient number, since it is larger than the sum of its proper divisors (1).

10440247 is an equidigital number, since it uses as much as digits as its factorization.

10440247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 10440247 is about 3231.1371063451. The cubic root of 10440247 is about 218.5597865395.

Adding to 10440247 its reverse (74204401), we get a palindrome (84644648).

The spelling of 10440247 in words is "ten million, four hundred forty thousand, two hundred forty-seven".