83427881 has 2 divisors, whose sum is σ = 83427882. Its totient is φ = 83427880.

The previous prime is 83427863. The next prime is 83427889. The reversal of 83427881 is 18872438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62267881 + 21160000 = 7891^2 + 4600^2 .

It is a cyclic number.

It is not a de Polignac number, because 83427881 - 2¹⁰ = 83426857 is a prime.

It is a super-2 number, since 2×83427881² = 13920422656300322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83427889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41713940 + 41713941.

It is an arithmetic number, because the mean of its divisors is an integer number (41713941).

Almost surely, 2^83427881 is an apocalyptic number.

It is an amenable number.

83427881 is a deficient number, since it is larger than the sum of its proper divisors (1).

83427881 is an equidigital number, since it uses as much as digits as its factorization.

83427881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 41.

The square root of 83427881 is about 9133.8864126942. The cubic root of 83427881 is about 436.9553599234.

The spelling of 83427881 in words is "eighty-three million, four hundred twenty-seven thousand, eight hundred eighty-one".