84000851 has 4 divisors (see below), whose sum is σ = 91637304. Its totient is φ = 76364400.

The previous prime is 84000827. The next prime is 84000857. The reversal of 84000851 is 15800048.

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 84000851 - 2²² = 79806547 is a prime.

It is a super-2 number, since 2×84000851² = 14112285937448402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 84000851.

It is not an unprimeable number, because it can be changed into a prime (84000857) 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, 3818210 + ... + 3818231.

It is an arithmetic number, because the mean of its divisors is an integer number (22909326).

Almost surely, 2^84000851 is an apocalyptic number.

84000851 is a deficient number, since it is larger than the sum of its proper divisors (7636453).

84000851 is a wasteful number, since it uses less digits than its factorization.

84000851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636452.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 84000851 is about 9165.1978156502. The cubic root of 84000851 is about 437.9533929405.

Adding to 84000851 its reverse (15800048), we get a palindrome (99800899).

The spelling of 84000851 in words is "eighty-four million, eight hundred fifty-one", and thus it is an aban number.