149987944 has 16 divisors (see below), whose sum is σ = 282276900. Its totient is φ = 74714112.

The previous prime is 149987941. The next prime is 149987953. The reversal of 149987944 is 449789941.

It can be written as a sum of positive squares in 2 ways, for example, as 147622500 + 2365444 = 12150^2 + 1538^2 .

It is not an unprimeable number, because it can be changed into a prime (149987941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32697 + ... + 37000.

Almost surely, 2^149987944 is an apocalyptic number.

It is an amenable number.

149987944 is a deficient number, since it is larger than the sum of its proper divisors (132288956).

149987944 is a wasteful number, since it uses less digits than its factorization.

149987944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69972 (or 69968 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 149987944 is about 12246.9565198869. The cubic root of 149987944 is about 531.3150493080.

The spelling of 149987944 in words is "one hundred forty-nine million, nine hundred eighty-seven thousand, nine hundred forty-four".