140539989 has 8 divisors (see below), whose sum is σ = 189492480. Its totient is φ = 92640416.

The previous prime is 140539951. The next prime is 140540009. The reversal of 140539989 is 989935041.

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 140539989 - 2¹² = 140535893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140539909) 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, 262917 + ... + 263450.

It is an arithmetic number, because the mean of its divisors is an integer number (23686560).

Almost surely, 2^140539989 is an apocalyptic number.

It is an amenable number.

140539989 is a deficient number, since it is larger than the sum of its proper divisors (48952491).

140539989 is an equidigital number, since it uses as much as digits as its factorization.

140539989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526459.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 140539989 is about 11854.9563052759. The cubic root of 140539989 is about 519.9161464886.

It can be divided in two parts, 14053 and 9989, that added together give a palindrome (24042).

The spelling of 140539989 in words is "one hundred forty million, five hundred thirty-nine thousand, nine hundred eighty-nine".