140639500 has 24 divisors (see below), whose sum is σ = 307157760. Its totient is φ = 56255600.

The previous prime is 140639431. The next prime is 140639509. The reversal of 140639500 is 5936041.

It is not an unprimeable number, because it can be changed into a prime (140639509) 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, 140140 + ... + 141139.

It is an arithmetic number, because the mean of its divisors is an integer number (12798240).

Almost surely, 2^140639500 is an apocalyptic number.

140639500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140639500 is an abundant number, since it is smaller than the sum of its proper divisors (166518260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140639500 is a wasteful number, since it uses less digits than its factorization.

140639500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281298 (or 281286 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 140639500 is about 11859.1525835533. The cubic root of 140639500 is about 520.0388284615.

The spelling of 140639500 in words is "one hundred forty million, six hundred thirty-nine thousand, five hundred".