140280839 has 2 divisors, whose sum is σ = 140280840. Its totient is φ = 140280838.

The previous prime is 140280809. The next prime is 140280851. The reversal of 140280839 is 938082041.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140280839 - 2²⁰ = 139232263 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140280799 and 140280808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140280809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70140419 + 70140420.

It is an arithmetic number, because the mean of its divisors is an integer number (70140420).

Almost surely, 2^140280839 is an apocalyptic number.

140280839 is a deficient number, since it is larger than the sum of its proper divisors (1).

140280839 is an equidigital number, since it uses as much as digits as its factorization.

140280839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 140280839 is about 11844.0212343612. The cubic root of 140280839 is about 519.5963818169.

The spelling of 140280839 in words is "one hundred forty million, two hundred eighty thousand, eight hundred thirty-nine".