406888243 has 4 divisors (see below), whose sum is σ = 406983528. Its totient is φ = 406792960.

The previous prime is 406888199. The next prime is 406888267. The reversal of 406888243 is 342888604.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406888243 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 406888243.

It is not an unprimeable number, because it can be changed into a prime (406888043) 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, 40921 + ... + 49882.

It is an arithmetic number, because the mean of its divisors is an integer number (101745882).

Almost surely, 2^406888243 is an apocalyptic number.

406888243 is a deficient number, since it is larger than the sum of its proper divisors (95285).

406888243 is an equidigital number, since it uses as much as digits as its factorization.

406888243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95284.

The product of its (nonzero) digits is 294912, while the sum is 43.

The square root of 406888243 is about 20171.4710172560. The cubic root of 406888243 is about 741.0116690114.

The spelling of 406888243 in words is "four hundred six million, eight hundred eighty-eight thousand, two hundred forty-three".