405047746393 has 8 divisors (see below), whose sum is σ = 418293304520. Its totient is φ = 391923152640.

The previous prime is 405047746349. The next prime is 405047746421. The reversal of 405047746393 is 393647740504.

It can be written as a sum of positive squares in 4 ways, for example, as 3786310089 + 401261436304 = 61533^2 + 633452^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 405047746393 - 2²⁹ = 404510875481 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 405047746393.

It is not an unprimeable number, because it can be changed into a prime (405047746093) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30234288 + ... + 30247681.

It is an arithmetic number, because the mean of its divisors is an integer number (52286663065).

Almost surely, 2^405047746393 is an apocalyptic number.

It is an amenable number.

405047746393 is a deficient number, since it is larger than the sum of its proper divisors (13245558127).

405047746393 is a wasteful number, since it uses less digits than its factorization.

405047746393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60482187.

The product of its (nonzero) digits is 7620480, while the sum is 52.

The spelling of 405047746393 in words is "four hundred five billion, forty-seven million, seven hundred forty-six thousand, three hundred ninety-three".