149475987 has 12 divisors (see below), whose sum is σ = 216935784. Its totient is φ = 99177120.

The previous prime is 149475943. The next prime is 149476031. The reversal of 149475987 is 789574941.

149475987 is a `hidden beast` number, since 1 + 4 + 9 + 47 + 598 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (149475943) and next prime (149476031).

It is not a de Polignac number, because 149475987 - 2¹⁶ = 149410451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149475587) 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 11 ways as a sum of consecutive naturals, for example, 37458 + ... + 41255.

It is an arithmetic number, because the mean of its divisors is an integer number (18077982).

Almost surely, 2^149475987 is an apocalyptic number.

149475987 is a deficient number, since it is larger than the sum of its proper divisors (67459797).

149475987 is a wasteful number, since it uses less digits than its factorization.

149475987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78930 (or 78927 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 149475987 is about 12226.0372566094. The cubic root of 149475987 is about 530.7098439251.

The spelling of 149475987 in words is "one hundred forty-nine million, four hundred seventy-five thousand, nine hundred eighty-seven".