408044998593 has 12 divisors (see below), whose sum is σ = 589504353360. Its totient is φ = 271981065816.

The previous prime is 408044998589. The next prime is 408044998619. The reversal of 408044998593 is 395899440804.

It is not a de Polignac number, because 408044998593 - 2² = 408044998589 is a prime.

It is a super-2 number, since 2×408044998593² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 408044998593.

It is not an unprimeable number, because it can be changed into a prime (408044198593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4024923 + ... + 4125056.

It is an arithmetic number, because the mean of its divisors is an integer number (49125362780).

Almost surely, 2^408044998593 is an apocalyptic number.

It is an amenable number.

408044998593 is a deficient number, since it is larger than the sum of its proper divisors (181459354767).

408044998593 is a wasteful number, since it uses less digits than its factorization.

408044998593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155548 (or 8155545 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

Adding to 408044998593 its sum of digits (63), we get a square (408044998656 = 638784²).

The spelling of 408044998593 in words is "four hundred eight billion, forty-four million, nine hundred ninety-eight thousand, five hundred ninety-three".