84069855 has 24 divisors (see below), whose sum is σ = 145950480. Its totient is φ = 44766720.

The previous prime is 84069833. The next prime is 84069863. The reversal of 84069855 is 55896048.

It is not a de Polignac number, because 84069855 - 2⁸ = 84069599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 84069855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40800 + ... + 42810.

It is an arithmetic number, because the mean of its divisors is an integer number (6081270).

Almost surely, 2^84069855 is an apocalyptic number.

84069855 is a deficient number, since it is larger than the sum of its proper divisors (61880625).

84069855 is a wasteful number, since it uses less digits than its factorization.

84069855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951 (or 2948 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 84069855 is about 9168.9615006281. The cubic root of 84069855 is about 438.0732816649.

The spelling of 84069855 in words is "eighty-four million, sixty-nine thousand, eight hundred fifty-five".