140404361 has 2 divisors, whose sum is σ = 140404362. Its totient is φ = 140404360.

The previous prime is 140404333. The next prime is 140404379. The reversal of 140404361 is 163404041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127125625 + 13278736 = 11275^2 + 3644^2 .

It is a cyclic number.

It is not a de Polignac number, because 140404361 - 2¹⁰ = 140403337 is a prime.

It is not a weakly prime, because it can be changed into another prime (140404961) 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, 70202180 + 70202181.

It is an arithmetic number, because the mean of its divisors is an integer number (70202181).

Almost surely, 2^140404361 is an apocalyptic number.

It is an amenable number.

140404361 is a deficient number, since it is larger than the sum of its proper divisors (1).

140404361 is an equidigital number, since it uses as much as digits as its factorization.

140404361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 140404361 is about 11849.2346166324. The cubic root of 140404361 is about 519.7488444433.

The spelling of 140404361 in words is "one hundred forty million, four hundred four thousand, three hundred sixty-one".