154789 has 2 divisors, whose sum is σ = 154790. Its totient is φ = 154788.

The previous prime is 154787. The next prime is 154799. The reversal of 154789 is 987451.

It is a happy number.

154789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146689 + 8100 = 383^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 154789 - 2¹ = 154787 is a prime.

Together with 154787, it forms a pair of twin primes.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77394 + 77395.

It is an arithmetic number, because the mean of its divisors is an integer number (77395).

2¹⁵⁴⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

154789 is a deficient number, since it is larger than the sum of its proper divisors (1).

154789 is an equidigital number, since it uses as much as digits as its factorization.

154789 is an odious number, because the sum of its binary digits is odd.

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

The square root of 154789 is about 393.4323321742. The cubic root of 154789 is about 53.6924677364.

The spelling of 154789 in words is "one hundred fifty-four thousand, seven hundred eighty-nine".