789145 has 12 divisors (see below), whose sum is σ = 1101924. Its totient is φ = 540960.

The previous prime is 789137. The next prime is 789149. The reversal of 789145 is 541987.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 451584 + 337561 = 672^2 + 581^2 .

It is not a de Polignac number, because 789145 - 2³ = 789137 is a prime.

It is a Duffinian number.

789145 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 789145.

It is not an unprimeable number, because it can be changed into a prime (789149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1366 + ... + 1855.

It is an arithmetic number, because the mean of its divisors is an integer number (91827).

2⁷⁸⁹¹⁴⁵ is an apocalyptic number.

It is an amenable number.

789145 is a deficient number, since it is larger than the sum of its proper divisors (312779).

789145 is a wasteful number, since it uses less digits than its factorization.

789145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3240 (or 3233 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 789145 is about 888.3383364462. The cubic root of 789145 is about 92.4099927974.

The spelling of 789145 in words is "seven hundred eighty-nine thousand, one hundred forty-five".