9809904232 has 8 divisors (see below), whose sum is σ = 18393570450. Its totient is φ = 4904952112.

The previous prime is 9809904229. The next prime is 9809904233. The reversal of 9809904232 is 2324099089.

It can be written as a sum of positive squares in only one way, i.e., 9671935716 + 137968516 = 98346^2 + 11746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (9809904233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613119007 + ... + 613119022.

Almost surely, 2^9809904232 is an apocalyptic number.

It is an amenable number.

9809904232 is a deficient number, since it is larger than the sum of its proper divisors (8583666218).

9809904232 is a wasteful number, since it uses less digits than its factorization.

9809904232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226238035 (or 1226238031 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 9809904232 is about 99044.9606592885. The cubic root of 9809904232 is about 2140.6956302600.

The spelling of 9809904232 in words is "nine billion, eight hundred nine million, nine hundred four thousand, two hundred thirty-two".