84468987 has 12 divisors (see below), whose sum is σ = 126530040. Its totient is φ = 56312496.

The previous prime is 84468973. The next prime is 84469001. The reversal of 84468987 is 78986448.

It is an interprime number because it is at equal distance from previous prime (84468973) and next prime (84469001).

It is not a de Polignac number, because 84468987 - 2⁷ = 84468859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84468907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173562 + ... + 174047.

It is an arithmetic number, because the mean of its divisors is an integer number (10544170).

Almost surely, 2^84468987 is an apocalyptic number.

84468987 is a deficient number, since it is larger than the sum of its proper divisors (42061053).

84468987 is an equidigital number, since it uses as much as digits as its factorization.

84468987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347624 (or 347612 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 84468987 is about 9190.7011158018. The cubic root of 84468987 is about 438.7654563917.

The spelling of 84468987 in words is "eighty-four million, four hundred sixty-eight thousand, nine hundred eighty-seven".