84799287 has 12 divisors (see below), whose sum is σ = 124316920. Its totient is φ = 55688688.

The previous prime is 84799279. The next prime is 84799303. The reversal of 84799287 is 78299748.

84799287 is a `hidden beast` number, since 8 + 479 + 92 + 87 = 666.

It is not a de Polignac number, because 84799287 - 2³ = 84799279 is a prime.

It is a super-3 number, since 3×84799287³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84799087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69712 + ... + 70917.

Almost surely, 2^84799287 is an apocalyptic number.

84799287 is a deficient number, since it is larger than the sum of its proper divisors (39517633).

84799287 is a wasteful number, since it uses less digits than its factorization.

84799287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140702 (or 140699 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 84799287 is about 9208.6528330696. The cubic root of 84799287 is about 439.3366156818.

It can be divided in two parts, 8479 and 9287, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 84799287 in words is "eighty-four million, seven hundred ninety-nine thousand, two hundred eighty-seven".