84017797 has 2 divisors, whose sum is σ = 84017798. Its totient is φ = 84017796.

The previous prime is 84017777. The next prime is 84017833. The reversal of 84017797 is 79771048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64224196 + 19793601 = 8014^2 + 4449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84017797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84017777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42008898 + 42008899.

It is an arithmetic number, because the mean of its divisors is an integer number (42008899).

Almost surely, 2^84017797 is an apocalyptic number.

It is an amenable number.

84017797 is a deficient number, since it is larger than the sum of its proper divisors (1).

84017797 is an equidigital number, since it uses as much as digits as its factorization.

84017797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 43.

The square root of 84017797 is about 9166.1222444390. The cubic root of 84017797 is about 437.9828412897.

The spelling of 84017797 in words is "eighty-four million, seventeen thousand, seven hundred ninety-seven".