148999 has 4 divisors (see below), whose sum is σ = 153064. Its totient is φ = 144936.

The previous prime is 148997. The next prime is 149011. The reversal of 148999 is 999841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999841 = 67 ⋅14923.

It is a cyclic number.

It is not a de Polignac number, because 148999 - 2¹ = 148997 is a prime.

It is a Duffinian number.

148999 is a modest number, since divided by 999 gives 148 as remainder.

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 (148991) 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 3 ways as a sum of consecutive naturals, for example, 1977 + ... + 2050.

It is an arithmetic number, because the mean of its divisors is an integer number (38266).

2¹⁴⁸⁹⁹⁹ is an apocalyptic number.

148999 is a deficient number, since it is larger than the sum of its proper divisors (4065).

148999 is an equidigital number, since it uses as much as digits as its factorization.

148999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064.

The product of its digits is 23328, while the sum is 40.

The square root of 148999 is about 386.0038859908. The cubic root of 148999 is about 53.0144733227.

The spelling of 148999 in words is "one hundred forty-eight thousand, nine hundred ninety-nine".