149921588 has 12 divisors (see below), whose sum is σ = 262557120. Its totient is φ = 74905272.

The previous prime is 149921581. The next prime is 149921599. The reversal of 149921588 is 885129941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149921581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7478 + ... + 18861.

It is an arithmetic number, because the mean of its divisors is an integer number (21879760).

Almost surely, 2^149921588 is an apocalyptic number.

It is an amenable number.

149921588 is a deficient number, since it is larger than the sum of its proper divisors (112635532).

149921588 is a wasteful number, since it uses less digits than its factorization.

149921588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27766 (or 27764 counting only the distinct ones).

The product of its digits is 207360, while the sum is 47.

The square root of 149921588 is about 12244.2471389629. The cubic root of 149921588 is about 531.2366849166.

The spelling of 149921588 in words is "one hundred forty-nine million, nine hundred twenty-one thousand, five hundred eighty-eight".