408428281393 has 8 divisors (see below), whose sum is σ = 445747671936. Its totient is φ = 371140482000.

The previous prime is 408428281343. The next prime is 408428281397. The reversal of 408428281393 is 393182824804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-408428281393 is a prime.

It is a super-3 number, since 3×408428281393³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 408428281393.

It is not an unprimeable number, because it can be changed into a prime (408428281397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7870746 + ... + 7922467.

It is an arithmetic number, because the mean of its divisors is an integer number (55718458992).

Almost surely, 2^408428281393 is an apocalyptic number.

It is an amenable number.

408428281393 is a deficient number, since it is larger than the sum of its proper divisors (37319390543).

408428281393 is a wasteful number, since it uses less digits than its factorization.

408428281393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15795575.

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 408428281393 in words is "four hundred eight billion, four hundred twenty-eight million, two hundred eighty-one thousand, three hundred ninety-three".