148809987 has 16 divisors (see below), whose sum is σ = 221138560. Its totient is φ = 98901000.

The previous prime is 148809979. The next prime is 148810003. The reversal of 148809987 is 789908841.

It is not a de Polignac number, because 148809987 - 2³ = 148809979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148809917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 612 + ... + 17262.

It is an arithmetic number, because the mean of its divisors is an integer number (13821160).

Almost surely, 2^148809987 is an apocalyptic number.

148809987 is a deficient number, since it is larger than the sum of its proper divisors (72328573).

148809987 is a wasteful number, since it uses less digits than its factorization.

148809987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16991 (or 16985 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 148809987 is about 12198.7698970019. The cubic root of 148809987 is about 529.9204662902.

The spelling of 148809987 in words is "one hundred forty-eight million, eight hundred nine thousand, nine hundred eighty-seven".