84047459 has 2 divisors, whose sum is σ = 84047460. Its totient is φ = 84047458.

The previous prime is 84047443. The next prime is 84047471. The reversal of 84047459 is 95474048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84047459 - 2⁴ = 84047443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84047429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42023729 + 42023730.

It is an arithmetic number, because the mean of its divisors is an integer number (42023730).

Almost surely, 2^84047459 is an apocalyptic number.

84047459 is a deficient number, since it is larger than the sum of its proper divisors (1).

84047459 is an equidigital number, since it uses as much as digits as its factorization.

84047459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 84047459 is about 9167.7401250254. The cubic root of 84047459 is about 438.0343776663.

The spelling of 84047459 in words is "eighty-four million, forty-seven thousand, four hundred fifty-nine".