149860209 has 8 divisors (see below), whose sum is σ = 201251680. Its totient is φ = 99187776.

The previous prime is 149860199. The next prime is 149860213. The reversal of 149860209 is 902068941.

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

It is not a de Polignac number, because 149860209 - 2¹¹ = 149858161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149860229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179272 + ... + 180105.

It is an arithmetic number, because the mean of its divisors is an integer number (25156460).

Almost surely, 2^149860209 is an apocalyptic number.

It is an amenable number.

149860209 is a deficient number, since it is larger than the sum of its proper divisors (51391471).

149860209 is a wasteful number, since it uses less digits than its factorization.

149860209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359519.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 149860209 is about 12241.7404399865. The cubic root of 149860209 is about 531.1641776196.

The spelling of 149860209 in words is "one hundred forty-nine million, eight hundred sixty thousand, two hundred nine".