149868905 has 8 divisors (see below), whose sum is σ = 180837384. Its totient is φ = 119232000.

The previous prime is 149868877. The next prime is 149868919. The reversal of 149868905 is 509868941.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4618201 + 145250704 = 2149^2 + 12052^2 .

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

It is not a de Polignac number, because 149868905 - 2⁶ = 149868841 is a prime.

It is a Duffinian 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, 81896 + ... + 83705.

It is an arithmetic number, because the mean of its divisors is an integer number (22604673).

Almost surely, 2^149868905 is an apocalyptic number.

It is an amenable number.

149868905 is a deficient number, since it is larger than the sum of its proper divisors (30968479).

149868905 is a wasteful number, since it uses less digits than its factorization.

149868905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165787.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 149868905 is about 12242.0956130885. The cubic root of 149868905 is about 531.1744514483.

The spelling of 149868905 in words is "one hundred forty-nine million, eight hundred sixty-eight thousand, nine hundred five".