149239 has 2 divisors, whose sum is σ = 149240. Its totient is φ = 149238.

The previous prime is 149213. The next prime is 149249. The reversal of 149239 is 932941.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (932941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149239 - 2⁷ = 149111 is a prime.

It is a Chen prime.

149239 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74619 + 74620.

It is an arithmetic number, because the mean of its divisors is an integer number (74620).

2¹⁴⁹²³⁹ is an apocalyptic number.

149239 is a deficient number, since it is larger than the sum of its proper divisors (1).

149239 is an equidigital number, since it uses as much as digits as its factorization.

149239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 149239 is about 386.3146386043. The cubic root of 149239 is about 53.0429223911.

The spelling of 149239 in words is "one hundred forty-nine thousand, two hundred thirty-nine".