84003917 has 2 divisors, whose sum is σ = 84003918. Its totient is φ = 84003916.

The previous prime is 84003911. The next prime is 84003929. The reversal of 84003917 is 71930048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72403081 + 11600836 = 8509^2 + 3406^2 .

It is a cyclic number.

It is not a de Polignac number, because 84003917 - 2⁶ = 84003853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84003911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42001958 + 42001959.

It is an arithmetic number, because the mean of its divisors is an integer number (42001959).

Almost surely, 2^84003917 is an apocalyptic number.

It is an amenable number.

84003917 is a deficient number, since it is larger than the sum of its proper divisors (1).

84003917 is an equidigital number, since it uses as much as digits as its factorization.

84003917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 84003917 is about 9165.3650772896. The cubic root of 84003917 is about 437.9587212546.

The spelling of 84003917 in words is "eighty-four million, three thousand, nine hundred seventeen".