149587987 has 2 divisors, whose sum is σ = 149587988. Its totient is φ = 149587986.

The previous prime is 149587979. The next prime is 149588011. The reversal of 149587987 is 789785941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149587987 - 2³ = 149587979 is a prime.

It is not a weakly prime, because it can be changed into another prime (149587687) 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 as a sum of consecutive naturals, namely, 74793993 + 74793994.

It is an arithmetic number, because the mean of its divisors is an integer number (74793994).

Almost surely, 2^149587987 is an apocalyptic number.

149587987 is a deficient number, since it is larger than the sum of its proper divisors (1).

149587987 is an equidigital number, since it uses as much as digits as its factorization.

149587987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 58.

The square root of 149587987 is about 12230.6167873906. The cubic root of 149587987 is about 530.8423616719.

The spelling of 149587987 in words is "one hundred forty-nine million, five hundred eighty-seven thousand, nine hundred eighty-seven".