9904340405 has 8 divisors (see below), whose sum is σ = 11887911384. Its totient is φ = 7921670400.

The previous prime is 9904340401. The next prime is 9904340417. The reversal of 9904340405 is 5040434099.

It can be written as a sum of positive squares in 4 ways, for example, as 455139556 + 9449200849 = 21334^2 + 97207^2 .

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

It is not a de Polignac number, because 9904340405 - 2² = 9904340401 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 (9904340401) 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, 200816 + ... + 245225.

It is an arithmetic number, because the mean of its divisors is an integer number (1485988923).

Almost surely, 2^9904340405 is an apocalyptic number.

It is an amenable number.

9904340405 is a deficient number, since it is larger than the sum of its proper divisors (1983570979).

9904340405 is a wasteful number, since it uses less digits than its factorization.

9904340405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450487.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 9904340405 is about 99520.5526763191. The cubic root of 9904340405 is about 2147.5429226397.

The spelling of 9904340405 in words is "nine billion, nine hundred four million, three hundred forty thousand, four hundred five".