9909734451 has 8 divisors (see below), whose sum is σ = 13393979280. Its totient is φ = 6515989632.

The previous prime is 9909734447. The next prime is 9909734473. The reversal of 9909734451 is 1544379099.

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

It is not a de Polignac number, because 9909734451 - 2² = 9909734447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9909734394 and 9909734403.

It is not an unprimeable number, because it can be changed into a prime (9909734491) 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, 22624746 + ... + 22625183.

It is an arithmetic number, because the mean of its divisors is an integer number (1674247410).

Almost surely, 2^9909734451 is an apocalyptic number.

9909734451 is a deficient number, since it is larger than the sum of its proper divisors (3484244829).

9909734451 is a wasteful number, since it uses less digits than its factorization.

9909734451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45250005.

The product of its (nonzero) digits is 1224720, while the sum is 51.

The square root of 9909734451 is about 99547.6491485359. The cubic root of 9909734451 is about 2147.9327127905.

The spelling of 9909734451 in words is "nine billion, nine hundred nine million, seven hundred thirty-four thousand, four hundred fifty-one".