9935423653 has 4 divisors (see below), whose sum is σ = 9947705580. Its totient is φ = 9923141728.

The previous prime is 9935423579. The next prime is 9935423669. The reversal of 9935423653 is 3563245399.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7158344449 + 2777079204 = 84607^2 + 52698^2 .

It is a cyclic number.

It is not a de Polignac number, because 9935423653 - 2¹⁷ = 9935292581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9935423597 and 9935423606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9935423053) 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, 6139750 + ... + 6141367.

It is an arithmetic number, because the mean of its divisors is an integer number (2486926395).

Almost surely, 2^9935423653 is an apocalyptic number.

It is an amenable number.

9935423653 is a deficient number, since it is larger than the sum of its proper divisors (12281927).

9935423653 is a wasteful number, since it uses less digits than its factorization.

9935423653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12281926.

The product of its digits is 2624400, while the sum is 49.

The square root of 9935423653 is about 99676.5953120390. The cubic root of 9935423653 is about 2149.7871541953.

The spelling of 9935423653 in words is "nine billion, nine hundred thirty-five million, four hundred twenty-three thousand, six hundred fifty-three".