83442487 has 2 divisors, whose sum is σ = 83442488. Its totient is φ = 83442486.

The previous prime is 83442481. The next prime is 83442523. The reversal of 83442487 is 78424438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83442487 - 2¹⁵ = 83409719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83442481) 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, 41721243 + 41721244.

It is an arithmetic number, because the mean of its divisors is an integer number (41721244).

Almost surely, 2^83442487 is an apocalyptic number.

83442487 is a deficient number, since it is larger than the sum of its proper divisors (1).

83442487 is an equidigital number, since it uses as much as digits as its factorization.

83442487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 40.

The square root of 83442487 is about 9134.6859278248. The cubic root of 83442487 is about 436.9808581840.

The spelling of 83442487 in words is "eighty-three million, four hundred forty-two thousand, four hundred eighty-seven".