405394884315 has 64 divisors (see below), whose sum is σ = 749319227520. Its totient is φ = 210366865152.

The previous prime is 405394884253. The next prime is 405394884319. The reversal of 405394884315 is 513488493504.

It is a happy number.

405394884315 is a `hidden beast` number, since 40 + 5 + 3 + 94 + 88 + 431 + 5 = 666.

It is not a de Polignac number, because 405394884315 - 2²⁶ = 405327775451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405394884319) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96394 + ... + 905583.

It is an arithmetic number, because the mean of its divisors is an integer number (11708112930).

Almost surely, 2^405394884315 is an apocalyptic number.

405394884315 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

405394884315 is a deficient number, since it is larger than the sum of its proper divisors (343924343205).

405394884315 is an equidigital number, since it uses as much as digits as its factorization.

405394884315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002040 (or 1002022 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 405394884315 in words is "four hundred five billion, three hundred ninety-four million, eight hundred eighty-four thousand, three hundred fifteen".