149999985 has 32 divisors (see below), whose sum is σ = 267840000. Its totient is φ = 79648128.

The previous prime is 149999957. The next prime is 150000001. The reversal of 149999985 is 589999941.

It is not a de Polignac number, because 149999985 - 2²⁰ = 148951409 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 29941 + ... + 34589.

It is an arithmetic number, because the mean of its divisors is an integer number (8370000).

Almost surely, 2^149999985 is an apocalyptic number.

149999985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149999985 is a deficient number, since it is larger than the sum of its proper divisors (117840015).

149999985 is a wasteful number, since it uses less digits than its factorization.

149999985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4902 (or 4896 counting only the distinct ones).

The product of its digits is 9447840, while the sum is 63.

The square root of 149999985 is about 12247.4481015434. The cubic root of 149999985 is about 531.3292668803.

It can be divided in two parts, 14 and 9999985, that added together give a palindrome (9999999).

The spelling of 149999985 in words is "one hundred forty-nine million, nine hundred ninety-nine thousand, nine hundred eighty-five".