140108985 has 48 divisors (see below), whose sum is σ = 268354944. Its totient is φ = 67262976.

The previous prime is 140108981. The next prime is 140108987. The reversal of 140108985 is 589801041.

140108985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140108985 - 2² = 140108981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140108981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13614 + ... + 21576.

It is an arithmetic number, because the mean of its divisors is an integer number (5590728).

Almost surely, 2^140108985 is an apocalyptic number.

140108985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140108985 is a deficient number, since it is larger than the sum of its proper divisors (128245959).

140108985 is a wasteful number, since it uses less digits than its factorization.

140108985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8014 (or 8011 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 140108985 is about 11836.7641270746. The cubic root of 140108985 is about 519.3841142774.

The spelling of 140108985 in words is "one hundred forty million, one hundred eight thousand, nine hundred eighty-five".