84408369 has 4 divisors (see below), whose sum is σ = 112544496. Its totient is φ = 56272244.

The previous prime is 84408353. The next prime is 84408371. The reversal of 84408369 is 96380448.

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 not a de Polignac number, because 84408369 - 2⁴ = 84408353 is a prime.

It is a super-2 number, since 2×84408369² = 14249545514480322, 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 84408369.

It is not an unprimeable number, because it can be changed into a prime (84408169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14068059 + ... + 14068064.

It is an arithmetic number, because the mean of its divisors is an integer number (28136124).

Almost surely, 2^84408369 is an apocalyptic number.

It is an amenable number.

84408369 is a deficient number, since it is larger than the sum of its proper divisors (28136127).

84408369 is a wasteful number, since it uses less digits than its factorization.

84408369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28136126.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 84408369 is about 9187.4027341790. The cubic root of 84408369 is about 438.6604732878.

The spelling of 84408369 in words is "eighty-four million, four hundred eight thousand, three hundred sixty-nine".