84473861 has 2 divisors, whose sum is σ = 84473862. Its totient is φ = 84473860.

The previous prime is 84473827. The next prime is 84473927. The reversal of 84473861 is 16837448.

84473861 is nontrivially palindromic in base 16.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68989636 + 15484225 = 8306^2 + 3935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84473861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84473261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42236930 + 42236931.

It is an arithmetic number, because the mean of its divisors is an integer number (42236931).

Almost surely, 2^84473861 is an apocalyptic number.

It is an amenable number.

84473861 is a deficient number, since it is larger than the sum of its proper divisors (1).

84473861 is an equidigital number, since it uses as much as digits as its factorization.

84473861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The square root of 84473861 is about 9190.9662712905. The cubic root of 84473861 is about 438.7738953931.

The spelling of 84473861 in words is "eighty-four million, four hundred seventy-three thousand, eight hundred sixty-one".