147789 has 6 divisors (see below), whose sum is σ = 213486. Its totient is φ = 98520.

The previous prime is 147787. The next prime is 147793. The reversal of 147789 is 987741.

It can be written as a sum of positive squares in only one way, i.e., 81225 + 66564 = 285^2 + 258^2 .

It is not a de Polignac number, because 147789 - 2¹ = 147787 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8202 + ... + 8219.

It is an arithmetic number, because the mean of its divisors is an integer number (35581).

2¹⁴⁷⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

147789 is a deficient number, since it is larger than the sum of its proper divisors (65697).

147789 is a wasteful number, since it uses less digits than its factorization.

147789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16427 (or 16424 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 147789 is about 384.4333492297. The cubic root of 147789 is about 52.8705753889.

The spelling of 147789 in words is "one hundred forty-seven thousand, seven hundred eighty-nine".