7889345 has 16 divisors (see below), whose sum is σ = 10202112. Its totient is φ = 5839680.

The previous prime is 7889341. The next prime is 7889347. The reversal of 7889345 is 5439887.

It is not a de Polignac number, because 7889345 - 2² = 7889341 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7889296 and 7889305.

It is not an unprimeable number, because it can be changed into a prime (7889341) 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, 2459 + ... + 4671.

It is an arithmetic number, because the mean of its divisors is an integer number (637632).

Almost surely, 2^7889345 is an apocalyptic number.

It is an amenable number.

7889345 is a deficient number, since it is larger than the sum of its proper divisors (2312767).

7889345 is a wasteful number, since it uses less digits than its factorization.

7889345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272.

The product of its digits is 241920, while the sum is 44.

The square root of 7889345 is about 2808.7977855303. The cubic root of 7889345 is about 199.0735904524.

The spelling of 7889345 in words is "seven million, eight hundred eighty-nine thousand, three hundred forty-five".