84741987 has 24 divisors (see below), whose sum is σ = 126862848. Its totient is φ = 50255920.

The previous prime is 84741947. The next prime is 84741989. The reversal of 84741987 is 78914748.

It is not a de Polignac number, because 84741987 - 2¹⁰ = 84740963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84741989) 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 23 ways as a sum of consecutive naturals, for example, 14578 + ... + 19544.

It is an arithmetic number, because the mean of its divisors is an integer number (5285952).

Almost surely, 2^84741987 is an apocalyptic number.

84741987 is a deficient number, since it is larger than the sum of its proper divisors (42120861).

84741987 is a wasteful number, since it uses less digits than its factorization.

84741987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039 (or 5028 counting only the distinct ones).

The product of its digits is 451584, while the sum is 48.

The square root of 84741987 is about 9205.5411030531. The cubic root of 84741987 is about 439.2376381973.

The spelling of 84741987 in words is "eighty-four million, seven hundred forty-one thousand, nine hundred eighty-seven".