140439650 has 24 divisors (see below), whose sum is σ = 281312724. Its totient is φ = 51854400.

The previous prime is 140439581. The next prime is 140439661. The reversal of 140439650 is 56934041.

140439650 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 16540489 + 123899161 = 4067^2 + 11131^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 107381 + ... + 108680.

Almost surely, 2^140439650 is an apocalyptic number.

140439650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140439650 is an abundant number, since it is smaller than the sum of its proper divisors (140873074).

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

140439650 is a wasteful number, since it uses less digits than its factorization.

140439650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216086 (or 216081 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 140439650 is about 11850.7236065989. The cubic root of 140439650 is about 519.7923850675.

The spelling of 140439650 in words is "one hundred forty million, four hundred thirty-nine thousand, six hundred fifty".