140439633 has 32 divisors (see below), whose sum is σ = 200724480. Its totient is φ = 87151680.

The previous prime is 140439581. The next prime is 140439661. The reversal of 140439633 is 336934041.

It is not a de Polignac number, because 140439633 - 2⁹ = 140439121 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140439594 and 140439603.

It is not an unprimeable number, because it can be changed into a prime (140439433) 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 31 ways as a sum of consecutive naturals, for example, 533860 + ... + 534122.

It is an arithmetic number, because the mean of its divisors is an integer number (6272640).

Almost surely, 2^140439633 is an apocalyptic number.

It is an amenable number.

140439633 is a deficient number, since it is larger than the sum of its proper divisors (60284847).

140439633 is a wasteful number, since it uses less digits than its factorization.

140439633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469.

The product of its (nonzero) digits is 23328, while the sum is 33.

The square root of 140439633 is about 11850.7228893431. The cubic root of 140439633 is about 519.7923640942.

The spelling of 140439633 in words is "one hundred forty million, four hundred thirty-nine thousand, six hundred thirty-three".