9139845 has 32 divisors (see below), whose sum is σ = 17184384. Its totient is φ = 4089600.

The previous prime is 9139841. The next prime is 9139853. The reversal of 9139845 is 5489319.

9139845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9139845 - 2² = 9139841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9139841) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15 + ... + 4275.

It is an arithmetic number, because the mean of its divisors is an integer number (537012).

Almost surely, 2^9139845 is an apocalyptic number.

It is an amenable number.

9139845 is a deficient number, since it is larger than the sum of its proper divisors (8044539).

9139845 is a wasteful number, since it uses less digits than its factorization.

9139845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4293.

The product of its digits is 38880, while the sum is 39.

The square root of 9139845 is about 3023.2176567359. The cubic root of 9139845 is about 209.0802176752.

The spelling of 9139845 in words is "nine million, one hundred thirty-nine thousand, eight hundred forty-five".