140839537 has 2 divisors, whose sum is σ = 140839538. Its totient is φ = 140839536.

The previous prime is 140839487. The next prime is 140839579. The reversal of 140839537 is 735938041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91221601 + 49617936 = 9551^2 + 7044^2 .

It is a cyclic number.

It is not a de Polignac number, because 140839537 - 2⁷ = 140839409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140839537.

It is not a weakly prime, because it can be changed into another prime (140839597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70419768 + 70419769.

It is an arithmetic number, because the mean of its divisors is an integer number (70419769).

Almost surely, 2^140839537 is an apocalyptic number.

It is an amenable number.

140839537 is a deficient number, since it is larger than the sum of its proper divisors (1).

140839537 is an equidigital number, since it uses as much as digits as its factorization.

140839537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 140839537 is about 11867.5834524136. The cubic root of 140839537 is about 520.2852687706.

It can be divided in two parts, 140839 and 537, that added together give a square (141376 = 376²).

The spelling of 140839537 in words is "one hundred forty million, eight hundred thirty-nine thousand, five hundred thirty-seven".