140331839 has 2 divisors, whose sum is σ = 140331840. Its totient is φ = 140331838.

The previous prime is 140331827. The next prime is 140331857. The reversal of 140331839 is 938133041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140331839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140331859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70165919 + 70165920.

It is an arithmetic number, because the mean of its divisors is an integer number (70165920).

Almost surely, 2^140331839 is an apocalyptic number.

140331839 is a deficient number, since it is larger than the sum of its proper divisors (1).

140331839 is an equidigital number, since it uses as much as digits as its factorization.

140331839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 140331839 is about 11846.1740237091. The cubic root of 140331839 is about 519.6593417216.

The spelling of 140331839 in words is "one hundred forty million, three hundred thirty-one thousand, eight hundred thirty-nine".