140440351 has 2 divisors, whose sum is σ = 140440352. Its totient is φ = 140440350.

The previous prime is 140440331. The next prime is 140440367. The reversal of 140440351 is 153044041.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140440351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140440331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70220175 + 70220176.

It is an arithmetic number, because the mean of its divisors is an integer number (70220176).

Almost surely, 2^140440351 is an apocalyptic number.

140440351 is a deficient number, since it is larger than the sum of its proper divisors (1).

140440351 is an equidigital number, since it uses as much as digits as its factorization.

140440351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 140440351 is about 11850.7531828150. The cubic root of 140440351 is about 519.7932499084.

Adding to 140440351 its reverse (153044041), we get a palindrome (293484392).

The spelling of 140440351 in words is "one hundred forty million, four hundred forty thousand, three hundred fifty-one".