140649953 has 2 divisors, whose sum is σ = 140649954. Its totient is φ = 140649952.

The previous prime is 140649937. The next prime is 140649973. The reversal of 140649953 is 359946041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140588449 + 61504 = 11857^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 140649953 - 2⁴ = 140649937 is a prime.

It is a Chen prime.

It is equal to p_7946762 and since 140649953 and 7946762 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140649953.

It is not a weakly prime, because it can be changed into another prime (140649973) 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, 70324976 + 70324977.

It is an arithmetic number, because the mean of its divisors is an integer number (70324977).

Almost surely, 2^140649953 is an apocalyptic number.

It is an amenable number.

140649953 is a deficient number, since it is larger than the sum of its proper divisors (1).

140649953 is an equidigital number, since it uses as much as digits as its factorization.

140649953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 140649953 is about 11859.5932898224. The cubic root of 140649953 is about 520.0517120663.

The spelling of 140649953 in words is "one hundred forty million, six hundred forty-nine thousand, nine hundred fifty-three".