405888467401 has 4 divisors (see below), whose sum is σ = 405892342404. Its totient is φ = 405884592400.

The previous prime is 405888467399. The next prime is 405888467431. The reversal of 405888467401 is 104764888504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 218555315001 + 187333152400 = 467499^2 + 432820^2 .

It is a cyclic number.

It is not a de Polignac number, because 405888467401 - 2¹ = 405888467399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405888467431) 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 3 ways as a sum of consecutive naturals, for example, 1775890 + ... + 1991371.

It is an arithmetic number, because the mean of its divisors is an integer number (101473085601).

Almost surely, 2^405888467401 is an apocalyptic number.

It is an amenable number.

405888467401 is a deficient number, since it is larger than the sum of its proper divisors (3875003).

405888467401 is a wasteful number, since it uses less digits than its factorization.

405888467401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3875002.

The product of its (nonzero) digits is 6881280, while the sum is 55.

The spelling of 405888467401 in words is "four hundred five billion, eight hundred eighty-eight million, four hundred sixty-seven thousand, four hundred one".