84946987 has 4 divisors (see below), whose sum is σ = 85567176. Its totient is φ = 84326800.

The previous prime is 84946951. The next prime is 84946993. The reversal of 84946987 is 78964948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84946987 - 2⁷ = 84946859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84946997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309889 + ... + 310162.

It is an arithmetic number, because the mean of its divisors is an integer number (21391794).

Almost surely, 2^84946987 is an apocalyptic number.

84946987 is a deficient number, since it is larger than the sum of its proper divisors (620189).

84946987 is a wasteful number, since it uses less digits than its factorization.

84946987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620188.

The product of its digits is 3483648, while the sum is 55.

The square root of 84946987 is about 9216.6689752860. The cubic root of 84946987 is about 439.5915407036.

It can be divided in two parts, 849469 and 87, that added together give a triangular number (849556 = T₁₃₀₃).

The spelling of 84946987 in words is "eighty-four million, nine hundred forty-six thousand, nine hundred eighty-seven".