149234987 has 24 divisors (see below), whose sum is σ = 174283200. Its totient is φ = 127329840.

The previous prime is 149234951. The next prime is 149235019. The reversal of 149234987 is 789432941.

It is not a de Polignac number, because 149234987 - 2⁶ = 149234923 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (149234927) 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 23 ways as a sum of consecutive naturals, for example, 319328 + ... + 319794.

It is an arithmetic number, because the mean of its divisors is an integer number (7261800).

Almost surely, 2^149234987 is an apocalyptic number.

149234987 is a deficient number, since it is larger than the sum of its proper divisors (25048213).

149234987 is a wasteful number, since it uses less digits than its factorization.

149234987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647 (or 636 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 149234987 is about 12216.1772662319. The cubic root of 149234987 is about 530.4244694984.

The spelling of 149234987 in words is "one hundred forty-nine million, two hundred thirty-four thousand, nine hundred eighty-seven".