140239986 has 8 divisors (see below), whose sum is σ = 280479984. Its totient is φ = 46746660.

The previous prime is 140239973. The next prime is 140239997. The reversal of 140239986 is 689932041.

140239986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

140239986 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11686660 + ... + 11686671.

It is an arithmetic number, because the mean of its divisors is an integer number (35059998).

Almost surely, 2^140239986 is an apocalyptic number.

140239986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

140239986 is a wasteful number, since it uses less digits than its factorization.

140239986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23373336.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 140239986 is about 11842.2964833684. The cubic root of 140239986 is about 519.5459374557.

The spelling of 140239986 in words is "one hundred forty million, two hundred thirty-nine thousand, nine hundred eighty-six".