149539986 has 16 divisors (see below), whose sum is σ = 332311200. Its totient is φ = 49846644.

The previous prime is 149539967. The next prime is 149539991. The reversal of 149539986 is 689935941.

149539986 is a `hidden beast` number, since 14 + 9 + 539 + 98 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 2769259 = 149539986 / (1 + 4 + 9 + 5 + 3 + 9 + 9 + 8 + 6).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1384576 + ... + 1384683.

It is an arithmetic number, because the mean of its divisors is an integer number (20769450).

Almost surely, 2^149539986 is an apocalyptic number.

149539986 is an abundant number, since it is smaller than the sum of its proper divisors (182771214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149539986 is a wasteful number, since it uses less digits than its factorization.

149539986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2769270 (or 2769264 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 149539986 is about 12228.6543004535. The cubic root of 149539986 is about 530.7855752710.

The spelling of 149539986 in words is "one hundred forty-nine million, five hundred thirty-nine thousand, nine hundred eighty-six".