9919236412 has 12 divisors (see below), whose sum is σ = 17686186056. Its totient is φ = 4866040400.

The previous prime is 9919236403. The next prime is 9919236419. The reversal of 9919236412 is 2146329199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9919236419) 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, 23394214 + ... + 23394637.

It is an arithmetic number, because the mean of its divisors is an integer number (1473848838).

Almost surely, 2^9919236412 is an apocalyptic number.

It is an amenable number.

9919236412 is a deficient number, since it is larger than the sum of its proper divisors (7766949644).

9919236412 is a wasteful number, since it uses less digits than its factorization.

9919236412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46788908 (or 46788906 counting only the distinct ones).

The product of its digits is 209952, while the sum is 46.

The square root of 9919236412 is about 99595.3634061345. The cubic root of 9919236412 is about 2148.6190094547.

The spelling of 9919236412 in words is "nine billion, nine hundred nineteen million, two hundred thirty-six thousand, four hundred twelve".