9894247 has 4 divisors (see below), whose sum is σ = 10793736. Its totient is φ = 8994760.

The previous prime is 9894229. The next prime is 9894259. The reversal of 9894247 is 7424989.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9894247 - 2¹⁹ = 9369959 is a prime.

It is a super-2 number, since 2×9894247² = 195792247394018, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

9894247 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9894217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449728 + ... + 449749.

It is an arithmetic number, because the mean of its divisors is an integer number (2698434).

Almost surely, 2^9894247 is an apocalyptic number.

9894247 is a deficient number, since it is larger than the sum of its proper divisors (899489).

9894247 is a wasteful number, since it uses less digits than its factorization.

9894247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899488.

The product of its digits is 145152, while the sum is 43.

The square root of 9894247 is about 3145.5121999445. The cubic root of 9894247 is about 214.6813162184.

It can be divided in two parts, 98942 and 47, that added together give a palindrome (98989).

The spelling of 9894247 in words is "nine million, eight hundred ninety-four thousand, two hundred forty-seven".