83278417 has 2 divisors, whose sum is σ = 83278418. Its totient is φ = 83278416.

The previous prime is 83278411. The next prime is 83278451. The reversal of 83278417 is 71487238.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49126081 + 34152336 = 7009^2 + 5844^2 .

It is a cyclic number.

It is not a de Polignac number, because 83278417 - 2¹⁵ = 83245649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83278417.

It is not a weakly prime, because it can be changed into another prime (83278411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41639208 + 41639209.

It is an arithmetic number, because the mean of its divisors is an integer number (41639209).

Almost surely, 2^83278417 is an apocalyptic number.

It is an amenable number.

83278417 is a deficient number, since it is larger than the sum of its proper divisors (1).

83278417 is an equidigital number, since it uses as much as digits as its factorization.

83278417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 40.

The square root of 83278417 is about 9125.7009045881. The cubic root of 83278417 is about 436.6942636121.

The spelling of 83278417 in words is "eighty-three million, two hundred seventy-eight thousand, four hundred seventeen".