9840623 has 4 divisors (see below), whose sum is σ = 10597608. Its totient is φ = 9083640.

The previous prime is 9840617. The next prime is 9840643. The reversal of 9840623 is 3260489.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9840623 is a prime.

It is a super-2 number, since 2×9840623² = 193675722056258, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9840623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9840643) 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, 378473 + ... + 378498.

It is an arithmetic number, because the mean of its divisors is an integer number (2649402).

Almost surely, 2^9840623 is an apocalyptic number.

9840623 is a deficient number, since it is larger than the sum of its proper divisors (756985).

9840623 is a wasteful number, since it uses less digits than its factorization.

9840623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756984.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 9840623 is about 3136.9767292729. The cubic root of 9840623 is about 214.2927762540.

The spelling of 9840623 in words is "nine million, eight hundred forty thousand, six hundred twenty-three".