83848781 has 2 divisors, whose sum is σ = 83848782. Its totient is φ = 83848780.

The previous prime is 83848759. The next prime is 83848847. The reversal of 83848781 is 18784838.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45346756 + 38502025 = 6734^2 + 6205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83848781 is a prime.

It is a super-2 number, since 2×83848781² = 14061236150371922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83848711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41924390 + 41924391.

It is an arithmetic number, because the mean of its divisors is an integer number (41924391).

Almost surely, 2^83848781 is an apocalyptic number.

It is an amenable number.

83848781 is a deficient number, since it is larger than the sum of its proper divisors (1).

83848781 is an equidigital number, since it uses as much as digits as its factorization.

83848781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 344064, while the sum is 47.

The square root of 83848781 is about 9156.8980009608. The cubic root of 83848781 is about 437.6889519600.

The spelling of 83848781 in words is "eighty-three million, eight hundred forty-eight thousand, seven hundred eighty-one".