84006869 has 4 divisors (see below), whose sum is σ = 86716800. Its totient is φ = 81296940.

The previous prime is 84006841. The next prime is 84006889. The reversal of 84006869 is 96860048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84006869 is a prime.

It is a super-2 number, since 2×84006869² = 14114308078366322, which contains 22 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 (84006829) 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, 1354919 + ... + 1354980.

It is an arithmetic number, because the mean of its divisors is an integer number (21679200).

Almost surely, 2^84006869 is an apocalyptic number.

It is an amenable number.

84006869 is a deficient number, since it is larger than the sum of its proper divisors (2709931).

84006869 is a wasteful number, since it uses less digits than its factorization.

84006869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709930.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 84006869 is about 9165.5261169231. The cubic root of 84006869 is about 437.9638513289.

The spelling of 84006869 in words is "eighty-four million, six thousand, eight hundred sixty-nine".