9909043653 has 8 divisors (see below), whose sum is σ = 13212913600. Its totient is φ = 6605601408.

The previous prime is 9909043649. The next prime is 9909043757. The reversal of 9909043653 is 3563409099.

It is a happy number.

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

It is not a de Polignac number, because 9909043653 - 2² = 9909043649 is a prime.

It is a super-2 number, since 2×9909043653² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9909043603) 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, 48268 + ... + 148821.

It is an arithmetic number, because the mean of its divisors is an integer number (1651614200).

Almost surely, 2^9909043653 is an apocalyptic number.

It is an amenable number.

9909043653 is a deficient number, since it is larger than the sum of its proper divisors (3303869947).

9909043653 is a wasteful number, since it uses less digits than its factorization.

9909043653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213851.

The product of its (nonzero) digits is 787320, while the sum is 48.

The square root of 9909043653 is about 99544.1794029164. The cubic root of 9909043653 is about 2147.8828015270.

The spelling of 9909043653 in words is "nine billion, nine hundred nine million, forty-three thousand, six hundred fifty-three".