9920970135 has 24 divisors (see below), whose sum is σ = 17199134784. Its totient is φ = 5290326720.

The previous prime is 9920970133. The next prime is 9920970161. The reversal of 9920970135 is 5310790299.

It is a happy number.

It is not a de Polignac number, because 9920970135 - 2¹ = 9920970133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920970133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 343090 + ... + 370880.

It is an arithmetic number, because the mean of its divisors is an integer number (716630616).

Almost surely, 2^9920970135 is an apocalyptic number.

9920970135 is a deficient number, since it is larger than the sum of its proper divisors (7278164649).

9920970135 is a wasteful number, since it uses less digits than its factorization.

9920970135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35735 (or 35732 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 9920970135 is about 99604.0668597422. The cubic root of 9920970135 is about 2148.7441835116.

The spelling of 9920970135 in words is "nine billion, nine hundred twenty million, nine hundred seventy thousand, one hundred thirty-five".