148987 has 4 divisors (see below), whose sum is σ = 149760. Its totient is φ = 148216.

The previous prime is 148961. The next prime is 148991. The reversal of 148987 is 789841.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 789841 = 13 ⋅60757.

It is a cyclic number.

It is not a de Polignac number, because 148987 - 2⁷ = 148859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148927) 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 in 3 ways as a sum of consecutive naturals, for example, 189 + ... + 577.

It is an arithmetic number, because the mean of its divisors is an integer number (37440).

2¹⁴⁸⁹⁸⁷ is an apocalyptic number.

148987 is a deficient number, since it is larger than the sum of its proper divisors (773).

148987 is an equidigital number, since it uses as much as digits as its factorization.

148987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772.

The product of its digits is 16128, while the sum is 37.

The square root of 148987 is about 385.9883417929. The cubic root of 148987 is about 53.0130500676.

The spelling of 148987 in words is "one hundred forty-eight thousand, nine hundred eighty-seven".