9399861 has 16 divisors (see below), whose sum is σ = 14745600. Its totient is φ = 5897664.

The previous prime is 9399829. The next prime is 9399869. The reversal of 9399861 is 1689939.

It is not a de Polignac number, because 9399861 - 2⁵ = 9399829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9399869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9781 + ... + 10698.

It is an arithmetic number, because the mean of its divisors is an integer number (921600).

Almost surely, 2^9399861 is an apocalyptic number.

It is an amenable number.

9399861 is a deficient number, since it is larger than the sum of its proper divisors (5345739).

9399861 is a wasteful number, since it uses less digits than its factorization.

9399861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20505 (or 20499 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 9399861 is about 3065.9192748668. The cubic root of 9399861 is about 211.0443891845.

The spelling of 9399861 in words is "nine million, three hundred ninety-nine thousand, eight hundred sixty-one".