150840209 has 12 divisors (see below), whose sum is σ = 163820916. Its totient is φ = 138064608.

The previous prime is 150840199. The next prime is 150840227. The reversal of 150840209 is 902048051.

It can be written as a sum of positive squares in 2 ways, for example, as 87478609 + 63361600 = 9353^2 + 7960^2 .

It is not a de Polignac number, because 150840209 - 2²⁰ = 149791633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150840409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514667 + ... + 514959.

It is an arithmetic number, because the mean of its divisors is an integer number (13651743).

Almost surely, 2^150840209 is an apocalyptic number.

It is an amenable number.

150840209 is a deficient number, since it is larger than the sum of its proper divisors (12980707).

150840209 is an equidigital number, since it uses as much as digits as its factorization.

150840209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 150840209 is about 12281.7022028707. The cubic root of 150840209 is about 532.3194994628.

The spelling of 150840209 in words is "one hundred fifty million, eight hundred forty thousand, two hundred nine".