10004005405 has 4 divisors (see below), whose sum is σ = 12004806492. Its totient is φ = 8003204320.

The previous prime is 10004005399. The next prime is 10004005409. The reversal of 10004005405 is 50450040001.

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 7627052889 + 2376952516 = 87333^2 + 48754^2 .

It is not a de Polignac number, because 10004005405 - 2³ = 10004005397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10004005409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000400536 + ... + 1000400545.

It is an arithmetic number, because the mean of its divisors is an integer number (3001201623).

Almost surely, 2^10004005405 is an apocalyptic number.

It is an amenable number.

10004005405 is a deficient number, since it is larger than the sum of its proper divisors (2000801087).

10004005405 is an equidigital number, since it uses as much as digits as its factorization.

10004005405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000801086.

The product of its (nonzero) digits is 400, while the sum is 19.

Adding to 10004005405 its reverse (50450040001), we get a palindrome (60454045406).

The spelling of 10004005405 in words is "ten billion, four million, five thousand, four hundred five".