84863447 has 2 divisors, whose sum is σ = 84863448. Its totient is φ = 84863446.

The previous prime is 84863431. The next prime is 84863477. The reversal of 84863447 is 74436848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84863447 - 2⁴ = 84863431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84863398 and 84863407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84863477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42431723 + 42431724.

It is an arithmetic number, because the mean of its divisors is an integer number (42431724).

Almost surely, 2^84863447 is an apocalyptic number.

84863447 is a deficient number, since it is larger than the sum of its proper divisors (1).

84863447 is an equidigital number, since it uses as much as digits as its factorization.

84863447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 44.

The square root of 84863447 is about 9212.1358544042. The cubic root of 84863447 is about 439.4473899276.

The spelling of 84863447 in words is "eighty-four million, eight hundred sixty-three thousand, four hundred forty-seven".