158749 has 2 divisors, whose sum is σ = 158750. Its totient is φ = 158748.

The previous prime is 158747. The next prime is 158759. The reversal of 158749 is 947851.

It is a happy number.

158749 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., 85849 + 72900 = 293^2 + 270^2 .

It is an emirp because it is prime and its reverse (947851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158749 - 2¹ = 158747 is a prime.

Together with 158747, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79374 + 79375.

It is an arithmetic number, because the mean of its divisors is an integer number (79375).

2¹⁵⁸⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

158749 is a deficient number, since it is larger than the sum of its proper divisors (1).

158749 is an equidigital number, since it uses as much as digits as its factorization.

158749 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 158749 is about 398.4331813491. The cubic root of 158749 is about 54.1464929477.

The spelling of 158749 in words is "one hundred fifty-eight thousand, seven hundred forty-nine".