140985986 has 16 divisors (see below), whose sum is σ = 213027840. Its totient is φ = 69979200.

The previous prime is 140985983. The next prime is 140985991. The reversal of 140985986 is 689589041.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (140985983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294095 + ... + 294573.

It is an arithmetic number, because the mean of its divisors is an integer number (13314240).

Almost surely, 2^140985986 is an apocalyptic number.

140985986 is a deficient number, since it is larger than the sum of its proper divisors (72041854).

140985986 is a wasteful number, since it uses less digits than its factorization.

140985986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 140985986 is about 11873.7519765237. The cubic root of 140985986 is about 520.4655421611.

The spelling of 140985986 in words is "one hundred forty million, nine hundred eighty-five thousand, nine hundred eighty-six".