149798985 has 32 divisors (see below), whose sum is σ = 290034432. Its totient is φ = 64450560.

The previous prime is 149798969. The next prime is 149799017. The reversal of 149798985 is 589897941.

It is not a de Polignac number, because 149798985 - 2⁴ = 149798969 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40176 + ... + 43745.

It is an arithmetic number, because the mean of its divisors is an integer number (9063576).

Almost surely, 2^149798985 is an apocalyptic number.

149798985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149798985 is a deficient number, since it is larger than the sum of its proper divisors (140235447).

149798985 is a wasteful number, since it uses less digits than its factorization.

149798985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83953.

The product of its digits is 6531840, while the sum is 60.

The square root of 149798985 is about 12239.2395597112. The cubic root of 149798985 is about 531.0918336990.

The spelling of 149798985 in words is "one hundred forty-nine million, seven hundred ninety-eight thousand, nine hundred eighty-five".