84003869 has 2 divisors, whose sum is σ = 84003870. Its totient is φ = 84003868.

The previous prime is 84003853. The next prime is 84003911. The reversal of 84003869 is 96830048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45091225 + 38912644 = 6715^2 + 6238^2 .

It is a cyclic number.

It is not a de Polignac number, because 84003869 - 2⁴ = 84003853 is a prime.

It is a super-2 number, since 2×84003869² = 14113300013938322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84000869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42001934 + 42001935.

It is an arithmetic number, because the mean of its divisors is an integer number (42001935).

Almost surely, 2^84003869 is an apocalyptic number.

It is an amenable number.

84003869 is a deficient number, since it is larger than the sum of its proper divisors (1).

84003869 is an equidigital number, since it uses as much as digits as its factorization.

84003869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 84003869 is about 9165.3624587356. The cubic root of 84003869 is about 437.9586378378.

The spelling of 84003869 in words is "eighty-four million, three thousand, eight hundred sixty-nine".