82439563 has 2 divisors, whose sum is σ = 82439564. Its totient is φ = 82439562.

The previous prime is 82439503. The next prime is 82439573. The reversal of 82439563 is 36593428.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82439563 - 2⁹ = 82439051 is a prime.

It is not a weakly prime, because it can be changed into another prime (82439503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41219781 + 41219782.

It is an arithmetic number, because the mean of its divisors is an integer number (41219782).

Almost surely, 2^82439563 is an apocalyptic number.

82439563 is a deficient number, since it is larger than the sum of its proper divisors (1).

82439563 is an equidigital number, since it uses as much as digits as its factorization.

82439563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 82439563 is about 9079.6235054103. The cubic root of 82439563 is about 435.2230555515.

The spelling of 82439563 in words is "eighty-two million, four hundred thirty-nine thousand, five hundred sixty-three".