84187004 has 12 divisors (see below), whose sum is σ = 160720728. Its totient is φ = 38266800.

The previous prime is 84187001. The next prime is 84187007. The reversal of 84187004 is 40078148.

It is an interprime number because it is at equal distance from previous prime (84187001) and next prime (84187007).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84187001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956627 + ... + 956714.

It is an arithmetic number, because the mean of its divisors is an integer number (13393394).

Almost surely, 2^84187004 is an apocalyptic number.

It is an amenable number.

84187004 is a deficient number, since it is larger than the sum of its proper divisors (76533724).

84187004 is a wasteful number, since it uses less digits than its factorization.

84187004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1913356 (or 1913354 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 84187004 is about 9175.3476228424. The cubic root of 84187004 is about 438.2766681928.

The spelling of 84187004 in words is "eighty-four million, one hundred eighty-seven thousand, four".