8389745 has 16 divisors (see below), whose sum is σ = 12391680. Its totient is φ = 5310144.

The previous prime is 8389727. The next prime is 8389769. The reversal of 8389745 is 5479838.

It is not a de Polignac number, because 8389745 - 2⁶ = 8389681 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8389696 and 8389705.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8765 + ... + 9674.

It is an arithmetic number, because the mean of its divisors is an integer number (774480).

Almost surely, 2^8389745 is an apocalyptic number.

It is an amenable number.

8389745 is a deficient number, since it is larger than the sum of its proper divisors (4001935).

8389745 is a wasteful number, since it uses less digits than its factorization.

8389745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18464.

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

The square root of 8389745 is about 2896.5056533692. The cubic root of 8389745 is about 203.1965143062.

The spelling of 8389745 in words is "eight million, three hundred eighty-nine thousand, seven hundred forty-five".