406888342884 has 81 divisors (see below), whose sum is σ = 1054627818699. Its totient is φ = 132270382080.

The previous prime is 406888342873. The next prime is 406888342921. The reversal of 406888342884 is 488243888604.

The square root of 406888342884 is 637878.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 80015436900 + 326872905984 = 282870^2 + 571728^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 156916692 + ... + 156919284.

Almost surely, 2^406888342884 is an apocalyptic number.

406888342884 is the 637878-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406888342884

406888342884 is an abundant number, since it is smaller than the sum of its proper divisors (647739475815).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406888342884 is an equidigital number, since it uses as much as digits as its factorization.

406888342884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278 (or 2639 counting only the distinct ones).

The product of its (nonzero) digits is 75497472, while the sum is 63.

The spelling of 406888342884 in words is "four hundred six billion, eight hundred eighty-eight million, three hundred forty-two thousand, eight hundred eighty-four".