140387689 has 8 divisors (see below), whose sum is σ = 151280640. Its totient is φ = 129508176.

The previous prime is 140387671. The next prime is 140387707. The reversal of 140387689 is 986783041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140387671) and next prime (140387707).

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 140387689 - 2²³ = 131999081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140387629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32922 + ... + 36940.

It is an arithmetic number, because the mean of its divisors is an integer number (18910080).

Almost surely, 2^140387689 is an apocalyptic number.

It is an amenable number.

140387689 is a deficient number, since it is larger than the sum of its proper divisors (10892951).

140387689 is a wasteful number, since it uses less digits than its factorization.

140387689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 140387689 is about 11848.5310903926. The cubic root of 140387689 is about 519.7282714932.

The spelling of 140387689 in words is "one hundred forty million, three hundred eighty-seven thousand, six hundred eighty-nine".