83421361 has 2 divisors, whose sum is σ = 83421362. Its totient is φ = 83421360.

The previous prime is 83421337. The next prime is 83421367. The reversal of 83421361 is 16312438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61152400 + 22268961 = 7820^2 + 4719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83421361 is a prime.

It is not a weakly prime, because it can be changed into another prime (83421367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41710680 + 41710681.

It is an arithmetic number, because the mean of its divisors is an integer number (41710681).

Almost surely, 2^83421361 is an apocalyptic number.

It is an amenable number.

83421361 is a deficient number, since it is larger than the sum of its proper divisors (1).

83421361 is an equidigital number, since it uses as much as digits as its factorization.

83421361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 83421361 is about 9133.5294930273. The cubic root of 83421361 is about 436.9439767457.

Adding to 83421361 its reverse (16312438), we get a palindrome (99733799).

The spelling of 83421361 in words is "eighty-three million, four hundred twenty-one thousand, three hundred sixty-one".