83280839 has 2 divisors, whose sum is σ = 83280840. Its totient is φ = 83280838.

The previous prime is 83280817. The next prime is 83280853. The reversal of 83280839 is 93808238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83280839 - 2⁸ = 83280583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83280796 and 83280805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83280889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41640419 + 41640420.

It is an arithmetic number, because the mean of its divisors is an integer number (41640420).

Almost surely, 2^83280839 is an apocalyptic number.

83280839 is a deficient number, since it is larger than the sum of its proper divisors (1).

83280839 is an equidigital number, since it uses as much as digits as its factorization.

83280839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 83280839 is about 9125.8336057590. The cubic root of 83280839 is about 436.6984970549.

The spelling of 83280839 in words is "eighty-three million, two hundred eighty thousand, eight hundred thirty-nine".