140144386 has 4 divisors (see below), whose sum is σ = 210216582. Its totient is φ = 70072192.

The previous prime is 140144377. The next prime is 140144401. The reversal of 140144386 is 683441041.

140144386 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., 139688761 + 455625 = 11819^2 + 675^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35036095 + ... + 35036098.

Almost surely, 2^140144386 is an apocalyptic number.

140144386 is a deficient number, since it is larger than the sum of its proper divisors (70072196).

140144386 is an equidigital number, since it uses as much as digits as its factorization.

140144386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70072195.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 140144386 is about 11838.2594159783. The cubic root of 140144386 is about 519.4278544384.

The spelling of 140144386 in words is "one hundred forty million, one hundred forty-four thousand, three hundred eighty-six".