84206405 has 8 divisors (see below), whose sum is σ = 102265632. Its totient is φ = 66553168.

The previous prime is 84206399. The next prime is 84206417. The reversal of 84206405 is 50460248.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84206405 - 2¹⁴ = 84190021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 101039 + ... + 101868.

It is an arithmetic number, because the mean of its divisors is an integer number (12783204).

Almost surely, 2^84206405 is an apocalyptic number.

It is an amenable number.

84206405 is a deficient number, since it is larger than the sum of its proper divisors (18059227).

84206405 is a wasteful number, since it uses less digits than its factorization.

84206405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202995.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 84206405 is about 9176.4047970869. The cubic root of 84206405 is about 438.3103327417.

The spelling of 84206405 in words is "eighty-four million, two hundred six thousand, four hundred five".