140435985 has 8 divisors (see below), whose sum is σ = 224697600. Its totient is φ = 74899184.

The previous prime is 140435959. The next prime is 140435993. The reversal of 140435985 is 589534041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140435985 - 2⁹ = 140435473 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4681185 + ... + 4681214.

It is an arithmetic number, because the mean of its divisors is an integer number (28087200).

Almost surely, 2^140435985 is an apocalyptic number.

140435985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140435985 is a deficient number, since it is larger than the sum of its proper divisors (84261615).

140435985 is an equidigital number, since it uses as much as digits as its factorization.

140435985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9362407.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 140435985 is about 11850.5689736822. The cubic root of 140435985 is about 519.7878634203.

The spelling of 140435985 in words is "one hundred forty million, four hundred thirty-five thousand, nine hundred eighty-five".