154439 has 2 divisors, whose sum is σ = 154440. Its totient is φ = 154438.

The previous prime is 154423. The next prime is 154459. The reversal of 154439 is 934451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154439 - 2⁴ = 154423 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77219 + 77220.

It is an arithmetic number, because the mean of its divisors is an integer number (77220).

2¹⁵⁴⁴³⁹ is an apocalyptic number.

154439 is a deficient number, since it is larger than the sum of its proper divisors (1).

154439 is an equidigital number, since it uses as much as digits as its factorization.

154439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 154439 is about 392.9872771477. The cubic root of 154439 is about 53.6519684210.

The spelling of 154439 in words is "one hundred fifty-four thousand, four hundred thirty-nine".