84346861 has 2 divisors, whose sum is σ = 84346862. Its totient is φ = 84346860.

The previous prime is 84346859. The next prime is 84346891. The reversal of 84346861 is 16864348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53377636 + 30969225 = 7306^2 + 5565^2 .

It is a cyclic number.

It is not a de Polignac number, because 84346861 - 2¹ = 84346859 is a prime.

It is a super-2 number, since 2×84346861² = 14228785921106642, which contains 22 as substring.

Together with 84346859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84346831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42173430 + 42173431.

It is an arithmetic number, because the mean of its divisors is an integer number (42173431).

Almost surely, 2^84346861 is an apocalyptic number.

It is an amenable number.

84346861 is a deficient number, since it is larger than the sum of its proper divisors (1).

84346861 is an equidigital number, since it uses as much as digits as its factorization.

84346861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 40.

The square root of 84346861 is about 9184.0547145583. The cubic root of 84346861 is about 438.5538974232.

The spelling of 84346861 in words is "eighty-four million, three hundred forty-six thousand, eight hundred sixty-one".