9995963939 has 4 divisors (see below), whose sum is σ = 10764884256. Its totient is φ = 9227043624.

The previous prime is 9995963917. The next prime is 9995963969. The reversal of 9995963939 is 9393695999.

It is a happy number.

9995963939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9393695999 = 83969 ⋅111871.

It is a cyclic number.

It is not a de Polignac number, because 9995963939 - 2¹² = 9995959843 is a prime.

It is a super-3 number, since 3×9995963939³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9995963969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384460139 + ... + 384460164.

It is an arithmetic number, because the mean of its divisors is an integer number (2691221064).

Almost surely, 2^9995963939 is an apocalyptic number.

9995963939 is a deficient number, since it is larger than the sum of its proper divisors (768920317).

9995963939 is a wasteful number, since it uses less digits than its factorization.

9995963939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768920316.

The product of its digits is 143489070, while the sum is 71.

The square root of 9995963939 is about 99979.8176583654. The cubic root of 9995963939 is about 2154.1448033674.

The spelling of 9995963939 in words is "nine billion, nine hundred ninety-five million, nine hundred sixty-three thousand, nine hundred thirty-nine".