140975986 has 4 divisors (see below), whose sum is σ = 211463982. Its totient is φ = 70487992.

The previous prime is 140975971. The next prime is 140975987. The reversal of 140975986 is 689579041.

140975986 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 120318961 + 20657025 = 10969^2 + 4545^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (140975987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35243995 + ... + 35243998.

Almost surely, 2^140975986 is an apocalyptic number.

140975986 is a deficient number, since it is larger than the sum of its proper divisors (70487996).

140975986 is an equidigital number, since it uses as much as digits as its factorization.

140975986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70487995.

The product of its (nonzero) digits is 544320, while the sum is 49.

The square root of 140975986 is about 11873.3308721689. The cubic root of 140975986 is about 520.4532364972.

The spelling of 140975986 in words is "one hundred forty million, nine hundred seventy-five thousand, nine hundred eighty-six".