84423161 has 2 divisors, whose sum is σ = 84423162. Its totient is φ = 84423160.

The previous prime is 84423151. The next prime is 84423169. The reversal of 84423161 is 16132448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74304400 + 10118761 = 8620^2 + 3181^2 .

It is a cyclic number.

It is not a de Polignac number, because 84423161 - 2¹⁸ = 84161017 is a prime.

It is a super-2 number, since 2×84423161² = 14254540226463842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84423169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42211580 + 42211581.

It is an arithmetic number, because the mean of its divisors is an integer number (42211581).

Almost surely, 2^84423161 is an apocalyptic number.

It is an amenable number.

84423161 is a deficient number, since it is larger than the sum of its proper divisors (1).

84423161 is an equidigital number, since it uses as much as digits as its factorization.

84423161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 84423161 is about 9188.2077142389. The cubic root of 84423161 is about 438.6860958922.

The spelling of 84423161 in words is "eighty-four million, four hundred twenty-three thousand, one hundred sixty-one".