149808905 has 8 divisors (see below), whose sum is σ = 180273600. Its totient is φ = 119511856.

The previous prime is 149808889. The next prime is 149808917. The reversal of 149808905 is 509808941.

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

It is a cyclic number.

It is not a de Polignac number, because 149808905 - 2⁴ = 149808889 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39935 + ... + 43524.

It is an arithmetic number, because the mean of its divisors is an integer number (22534200).

Almost surely, 2^149808905 is an apocalyptic number.

It is an amenable number.

149808905 is a deficient number, since it is larger than the sum of its proper divisors (30464695).

149808905 is an equidigital number, since it uses as much as digits as its factorization.

149808905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83823.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 149808905 is about 12239.6448069378. The cubic root of 149808905 is about 531.1035567750.

The spelling of 149808905 in words is "one hundred forty-nine million, eight hundred eight thousand, nine hundred five".