140444671 has 4 divisors (see below), whose sum is σ = 140472144. Its totient is φ = 140417200.

The previous prime is 140444621. The next prime is 140444677. The reversal of 140444671 is 176444041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 176444041 = 929 ⋅189929.

It is a cyclic number.

It is not a de Polignac number, because 140444671 - 2⁷ = 140444543 is a prime.

It is a super-3 number, since 3×140444671³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140444677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550 + ... + 17131.

It is an arithmetic number, because the mean of its divisors is an integer number (35118036).

Almost surely, 2^140444671 is an apocalyptic number.

140444671 is a deficient number, since it is larger than the sum of its proper divisors (27473).

140444671 is an equidigital number, since it uses as much as digits as its factorization.

140444671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27472.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 140444671 is about 11850.9354483096. The cubic root of 140444671 is about 519.7985795348.

The spelling of 140444671 in words is "one hundred forty million, four hundred forty-four thousand, six hundred seventy-one".