140635441 has 4 divisors (see below), whose sum is σ = 148908132. Its totient is φ = 132362752.

The previous prime is 140635427. The next prime is 140635457. The reversal of 140635441 is 144536041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 123121216 + 17514225 = 11096^2 + 4185^2 .

It is a cyclic number.

It is not a de Polignac number, because 140635441 - 2⁹ = 140634929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140632441) 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 3 ways as a sum of consecutive naturals, for example, 4136320 + ... + 4136353.

It is an arithmetic number, because the mean of its divisors is an integer number (37227033).

Almost surely, 2^140635441 is an apocalyptic number.

It is an amenable number.

140635441 is a deficient number, since it is larger than the sum of its proper divisors (8272691).

140635441 is an equidigital number, since it uses as much as digits as its factorization.

140635441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8272690.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 140635441 is about 11858.9814486742. The cubic root of 140635441 is about 520.0338254624.

The spelling of 140635441 in words is "one hundred forty million, six hundred thirty-five thousand, four hundred forty-one".