140632389 has 32 divisors (see below), whose sum is σ = 214073600. Its totient is φ = 91212480.

The previous prime is 140632379. The next prime is 140632391. The reversal of 140632389 is 983236041.

140632389 is a `hidden beast` number, since 14 + 0 + 632 + 3 + 8 + 9 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-140632389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140632369) 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 31 ways as a sum of consecutive naturals, for example, 169227 + ... + 170055.

It is an arithmetic number, because the mean of its divisors is an integer number (6689800).

Almost surely, 2^140632389 is an apocalyptic number.

It is an amenable number.

140632389 is a deficient number, since it is larger than the sum of its proper divisors (73441211).

140632389 is a wasteful number, since it uses less digits than its factorization.

140632389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 140632389 is about 11858.8527691341. The cubic root of 140632389 is about 520.0300635972.

The spelling of 140632389 in words is "one hundred forty million, six hundred thirty-two thousand, three hundred eighty-nine".