149183940 has 48 divisors (see below), whose sum is σ = 421565760. Its totient is φ = 39415680.

The previous prime is 149183933. The next prime is 149183941. The reversal of 149183940 is 49381941.

It is not an unprimeable number, because it can be changed into a prime (149183941) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 4866 + ... + 17945.

It is an arithmetic number, because the mean of its divisors is an integer number (8782620).

Almost surely, 2^149183940 is an apocalyptic number.

149183940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149183940 is an abundant number, since it is smaller than the sum of its proper divisors (272381820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149183940 is a wasteful number, since it uses less digits than its factorization.

149183940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22932 (or 22930 counting only the distinct ones).

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

The square root of 149183940 is about 12214.0877678196. The cubic root of 149183940 is about 530.3639839821.

The spelling of 149183940 in words is "one hundred forty-nine million, one hundred eighty-three thousand, nine hundred forty".