408044998660 has 96 divisors (see below), whose sum is σ = 979715876832. Its totient is φ = 141419520000.

The previous prime is 408044998619. The next prime is 408044998661. The reversal of 408044998660 is 66899440804.

It can be written as a sum of positive squares in 16 ways, for example, as 105173084416 + 302871914244 = 324304^2 + 550338^2 .

It is a junction number, because it is equal to n+sod(n) for n = 408044998595 and 408044998604.

It is not an unprimeable number, because it can be changed into a prime (408044998661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1524910 + ... + 1772410.

It is an arithmetic number, because the mean of its divisors is an integer number (10205373717).

Almost surely, 2^408044998660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 408044998660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489857938416).

408044998660 is an abundant number, since it is smaller than the sum of its proper divisors (571670878172).

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

408044998660 is a wasteful number, since it uses less digits than its factorization.

408044998660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247913 (or 247911 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 58.

The spelling of 408044998660 in words is "four hundred eight billion, forty-four million, nine hundred ninety-eight thousand, six hundred sixty".