140835649 has 2 divisors, whose sum is σ = 140835650. Its totient is φ = 140835648.

The previous prime is 140835637. The next prime is 140835689. The reversal of 140835649 is 946538041.

It is an a-pointer prime, because the next prime (140835689) can be obtained adding 140835649 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70812225 + 70023424 = 8415^2 + 8368^2 .

It is a cyclic number.

It is not a de Polignac number, because 140835649 - 2¹¹ = 140833601 is a prime.

It is not a weakly prime, because it can be changed into another prime (140835689) 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 as a sum of consecutive naturals, namely, 70417824 + 70417825.

It is an arithmetic number, because the mean of its divisors is an integer number (70417825).

Almost surely, 2^140835649 is an apocalyptic number.

It is an amenable number.

140835649 is a deficient number, since it is larger than the sum of its proper divisors (1).

140835649 is an equidigital number, since it uses as much as digits as its factorization.

140835649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 140835649 is about 11867.4196437136. The cubic root of 140835649 is about 520.2804810815.

The spelling of 140835649 in words is "one hundred forty million, eight hundred thirty-five thousand, six hundred forty-nine".