84689459 has 2 divisors, whose sum is σ = 84689460. Its totient is φ = 84689458.

The previous prime is 84689453. The next prime is 84689509. The reversal of 84689459 is 95498648.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84689459 - 2⁸ = 84689203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84689459.

It is not a weakly prime, because it can be changed into another prime (84689453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42344729 + 42344730.

It is an arithmetic number, because the mean of its divisors is an integer number (42344730).

Almost surely, 2^84689459 is an apocalyptic number.

84689459 is a deficient number, since it is larger than the sum of its proper divisors (1).

84689459 is an equidigital number, since it uses as much as digits as its factorization.

84689459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 53.

The square root of 84689459 is about 9202.6875965666. The cubic root of 84689459 is about 439.1468644487.

The spelling of 84689459 in words is "eighty-four million, six hundred eighty-nine thousand, four hundred fifty-nine".