140639533 has 2 divisors, whose sum is σ = 140639534. Its totient is φ = 140639532.

The previous prime is 140639519. The next prime is 140639561. The reversal of 140639533 is 335936041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140493609 + 145924 = 11853^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 140639533 - 2¹³ = 140631341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140639563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70319766 + 70319767.

It is an arithmetic number, because the mean of its divisors is an integer number (70319767).

Almost surely, 2^140639533 is an apocalyptic number.

It is an amenable number.

140639533 is a deficient number, since it is larger than the sum of its proper divisors (1).

140639533 is an equidigital number, since it uses as much as digits as its factorization.

140639533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 34.

The square root of 140639533 is about 11859.1539748837. The cubic root of 140639533 is about 520.0388691359.

The spelling of 140639533 in words is "one hundred forty million, six hundred thirty-nine thousand, five hundred thirty-three".