140854349 has 2 divisors, whose sum is σ = 140854350. Its totient is φ = 140854348.

The previous prime is 140854339. The next prime is 140854361. The reversal of 140854349 is 943458041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127531849 + 13322500 = 11293^2 + 3650^2 .

It is an emirp because it is prime and its reverse (943458041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140854349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140854339) 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, 70427174 + 70427175.

It is an arithmetic number, because the mean of its divisors is an integer number (70427175).

Almost surely, 2^140854349 is an apocalyptic number.

It is an amenable number.

140854349 is a deficient number, since it is larger than the sum of its proper divisors (1).

140854349 is an equidigital number, since it uses as much as digits as its factorization.

140854349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 140854349 is about 11868.2074889176. The cubic root of 140854349 is about 520.3035074826.

The spelling of 140854349 in words is "one hundred forty million, eight hundred fifty-four thousand, three hundred forty-nine".