9857923 has 4 divisors (see below), whose sum is σ = 9886680. Its totient is φ = 9829168.

The previous prime is 9857899. The next prime is 9857927. The reversal of 9857923 is 3297589.

It is a happy number.

9857923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3297589 = 41 ⋅80429.

It is a cyclic number.

It is not a de Polignac number, because 9857923 - 2⁵ = 9857891 is a prime.

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 9857923.

It is not an unprimeable number, because it can be changed into a prime (9857927) 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, 13858 + ... + 14551.

It is an arithmetic number, because the mean of its divisors is an integer number (2471670).

Almost surely, 2^9857923 is an apocalyptic number.

9857923 is a deficient number, since it is larger than the sum of its proper divisors (28757).

9857923 is a wasteful number, since it uses less digits than its factorization.

9857923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28756.

The product of its digits is 136080, while the sum is 43.

The square root of 9857923 is about 3139.7329504275. The cubic root of 9857923 is about 214.4182796450.

The spelling of 9857923 in words is "nine million, eight hundred fifty-seven thousand, nine hundred twenty-three".