150908209 has 4 divisors (see below), whose sum is σ = 151176816. Its totient is φ = 150639604.

The previous prime is 150908183. The next prime is 150908213. The reversal of 150908209 is 902809051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 150908209 - 2⁹ = 150907697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150908239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133459 + ... + 134584.

It is an arithmetic number, because the mean of its divisors is an integer number (37794204).

Almost surely, 2^150908209 is an apocalyptic number.

It is an amenable number.

150908209 is a deficient number, since it is larger than the sum of its proper divisors (268607).

150908209 is an equidigital number, since it uses as much as digits as its factorization.

150908209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268606.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 150908209 is about 12284.4702368478. The cubic root of 150908209 is about 532.3994787737.

The spelling of 150908209 in words is "one hundred fifty million, nine hundred eight thousand, two hundred nine".