83420837 has 2 divisors, whose sum is σ = 83420838. Its totient is φ = 83420836.

The previous prime is 83420809. The next prime is 83420863. The reversal of 83420837 is 73802438.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54626881 + 28793956 = 7391^2 + 5366^2 .

It is a cyclic number.

It is not a de Polignac number, because 83420837 - 2¹² = 83416741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83420797 and 83420806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83420137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41710418 + 41710419.

It is an arithmetic number, because the mean of its divisors is an integer number (41710419).

Almost surely, 2^83420837 is an apocalyptic number.

It is an amenable number.

83420837 is a deficient number, since it is larger than the sum of its proper divisors (1).

83420837 is an equidigital number, since it uses as much as digits as its factorization.

83420837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 83420837 is about 9133.5008074670. The cubic root of 83420837 is about 436.9430618756.

The spelling of 83420837 in words is "eighty-three million, four hundred twenty thousand, eight hundred thirty-seven".