84163487 has 2 divisors, whose sum is σ = 84163488. Its totient is φ = 84163486.

The previous prime is 84163421. The next prime is 84163489. The reversal of 84163487 is 78436148.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84163487 - 2⁸ = 84163231 is a prime.

Together with 84163489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84163489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42081743 + 42081744.

It is an arithmetic number, because the mean of its divisors is an integer number (42081744).

Almost surely, 2^84163487 is an apocalyptic number.

84163487 is a deficient number, since it is larger than the sum of its proper divisors (1).

84163487 is an equidigital number, since it uses as much as digits as its factorization.

84163487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The square root of 84163487 is about 9174.0660015066. The cubic root of 84163487 is about 438.2358546396.

The spelling of 84163487 in words is "eighty-four million, one hundred sixty-three thousand, four hundred eighty-seven".