84406043 has 2 divisors, whose sum is σ = 84406044. Its totient is φ = 84406042.

The previous prime is 84406039. The next prime is 84406061. The reversal of 84406043 is 34060448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84406043 - 2² = 84406039 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 84405997 and 84406015.

It is not a weakly prime, because it can be changed into another prime (84406073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42203021 + 42203022.

It is an arithmetic number, because the mean of its divisors is an integer number (42203022).

Almost surely, 2^84406043 is an apocalyptic number.

84406043 is a deficient number, since it is larger than the sum of its proper divisors (1).

84406043 is an equidigital number, since it uses as much as digits as its factorization.

84406043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 84406043 is about 9187.2761469328. The cubic root of 84406043 is about 438.6564439337.

Subtracting from 84406043 its reverse (34060448), we obtain a triangular number (50345595 = T₁₀₀₃₄).

The spelling of 84406043 in words is "eighty-four million, four hundred six thousand, forty-three".