9915904601 has 4 divisors (see below), whose sum is σ = 10347030912. Its totient is φ = 9484778292.

The previous prime is 9915904597. The next prime is 9915904613. The reversal of 9915904601 is 1064095199.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9915904601 - 2² = 9915904597 is a prime.

It is a super-2 number, since 2×9915904601² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9915904301) 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, 215563121 + ... + 215563166.

It is an arithmetic number, because the mean of its divisors is an integer number (2586757728).

Almost surely, 2^9915904601 is an apocalyptic number.

It is an amenable number.

9915904601 is a deficient number, since it is larger than the sum of its proper divisors (431126311).

9915904601 is a wasteful number, since it uses less digits than its factorization.

9915904601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431126310.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 9915904601 is about 99578.6352637954. The cubic root of 9915904601 is about 2148.3784131751.

The spelling of 9915904601 in words is "nine billion, nine hundred fifteen million, nine hundred four thousand, six hundred one".