84402811 has 4 divisors (see below), whose sum is σ = 84452872. Its totient is φ = 84352752.

The previous prime is 84402797. The next prime is 84402821. The reversal of 84402811 is 11820448.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84402811 - 2¹⁹ = 83878523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84402811.

It is not an unprimeable number, because it can be changed into a prime (84402821) 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, 22410 + ... + 25903.

It is an arithmetic number, because the mean of its divisors is an integer number (21113218).

Almost surely, 2^84402811 is an apocalyptic number.

84402811 is a deficient number, since it is larger than the sum of its proper divisors (50061).

84402811 is a wasteful number, since it uses less digits than its factorization.

84402811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50060.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 84402811 is about 9187.1002498068. The cubic root of 84402811 is about 438.6508449834.

The spelling of 84402811 in words is "eighty-four million, four hundred two thousand, eight hundred eleven".