84466181 has 2 divisors, whose sum is σ = 84466182. Its totient is φ = 84466180.

The previous prime is 84466169. The next prime is 84466201. The reversal of 84466181 is 18166448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 4202500 = 8959^2 + 2050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84466181 is a prime.

It is a super-2 number, since 2×84466181² = 14269071465449522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84465181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42233090 + 42233091.

It is an arithmetic number, because the mean of its divisors is an integer number (42233091).

Almost surely, 2^84466181 is an apocalyptic number.

It is an amenable number.

84466181 is a deficient number, since it is larger than the sum of its proper divisors (1).

84466181 is an equidigital number, since it uses as much as digits as its factorization.

84466181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 38.

The square root of 84466181 is about 9190.5484602389. The cubic root of 84466181 is about 438.7605978452.

The spelling of 84466181 in words is "eighty-four million, four hundred sixty-six thousand, one hundred eighty-one".