149999012 has 6 divisors (see below), whose sum is σ = 262498278. Its totient is φ = 74999504.

The previous prime is 149999009. The next prime is 149999023. The reversal of 149999012 is 210999941.

It can be written as a sum of positive squares in only one way, i.e., 149181796 + 817216 = 12214^2 + 904^2 .

It is a super-2 number, since 2×149999012² = 44999407201952288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18749873 + ... + 18749880.

It is an arithmetic number, because the mean of its divisors is an integer number (43749713).

Almost surely, 2^149999012 is an apocalyptic number.

It is an amenable number.

149999012 is a deficient number, since it is larger than the sum of its proper divisors (112499266).

149999012 is a wasteful number, since it uses less digits than its factorization.

149999012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37499757 (or 37499755 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 149999012 is about 12247.4083789184. The cubic root of 149999012 is about 531.3281180258.

The spelling of 149999012 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, twelve".