140444689 has 8 divisors (see below), whose sum is σ = 175099968. Its totient is φ = 109437360.

The previous prime is 140444683. The next prime is 140444719. The reversal of 140444689 is 986444041.

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

It is a cyclic number.

It is not a de Polignac number, because 140444689 - 2¹¹ = 140442641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140444683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911902 + ... + 912055.

It is an arithmetic number, because the mean of its divisors is an integer number (21887496).

Almost surely, 2^140444689 is an apocalyptic number.

It is an amenable number.

140444689 is a deficient number, since it is larger than the sum of its proper divisors (34655279).

140444689 is a wasteful number, since it uses less digits than its factorization.

140444689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823975.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 140444689 is about 11850.9362077433. The cubic root of 140444689 is about 519.7986017414.

The spelling of 140444689 in words is "one hundred forty million, four hundred forty-four thousand, six hundred eighty-nine".