7989345 has 48 divisors (see below), whose sum is σ = 17052672. Its totient is φ = 3369600.

The previous prime is 7989343. The next prime is 7989407. The reversal of 7989345 is 5439897.

It is not a de Polignac number, because 7989345 - 2¹ = 7989343 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a d-powerful number, because it can be written as 7⁷ + 9³ + 8⁷ + 9⁷ + 3⁹ + 4⁹ + 5⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 7989345.

It is not an unprimeable number, because it can be changed into a prime (7989341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3120 + ... + 5070.

It is an arithmetic number, because the mean of its divisors is an integer number (355264).

Almost surely, 2^7989345 is an apocalyptic number.

It is an amenable number.

7989345 is an abundant number, since it is smaller than the sum of its proper divisors (9063327).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7989345 is a wasteful number, since it uses less digits than its factorization.

7989345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982 (or 1979 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 7989345 is about 2826.5429414746. The cubic root of 7989345 is about 199.9111688843.

The spelling of 7989345 in words is "seven million, nine hundred eighty-nine thousand, three hundred forty-five".