83989441 has 2 divisors, whose sum is σ = 83989442. Its totient is φ = 83989440.

The previous prime is 83989439. The next prime is 83989453. The reversal of 83989441 is 14498938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81000000 + 2989441 = 9000^2 + 1729^2 .

It is a cyclic number.

It is not a de Polignac number, because 83989441 - 2¹ = 83989439 is a prime.

Together with 83989439, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 83989391 and 83989400.

It is not a weakly prime, because it can be changed into another prime (83989541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41994720 + 41994721.

It is an arithmetic number, because the mean of its divisors is an integer number (41994721).

Almost surely, 2^83989441 is an apocalyptic number.

It is an amenable number.

83989441 is a deficient number, since it is larger than the sum of its proper divisors (1).

83989441 is an equidigital number, since it uses as much as digits as its factorization.

83989441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 46.

The square root of 83989441 is about 9164.5753311324. The cubic root of 83989441 is about 437.9335626871.

The spelling of 83989441 in words is "eighty-three million, nine hundred eighty-nine thousand, four hundred forty-one".