148666209 has 8 divisors (see below), whose sum is σ = 205056960. Its totient is φ = 95693136.

The previous prime is 148666201. The next prime is 148666249. The reversal of 148666209 is 902666841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 148666209 - 2³ = 148666201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (148666201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 854317 + ... + 854490.

It is an arithmetic number, because the mean of its divisors is an integer number (25632120).

Almost surely, 2^148666209 is an apocalyptic number.

It is an amenable number.

148666209 is a deficient number, since it is larger than the sum of its proper divisors (56390751).

148666209 is a wasteful number, since it uses less digits than its factorization.

148666209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708839.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 148666209 is about 12192.8753376716. The cubic root of 148666209 is about 529.7497441998.

The spelling of 148666209 in words is "one hundred forty-eight million, six hundred sixty-six thousand, two hundred nine".