9642039913 has 4 divisors (see below), whose sum is σ = 10518589008. Its totient is φ = 8765490820.

The previous prime is 9642039907. The next prime is 9642039917. The reversal of 9642039913 is 3199302469.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9642039913 - 2⁹ = 9642039401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9642039917) 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, 438274531 + ... + 438274552.

It is an arithmetic number, because the mean of its divisors is an integer number (2629647252).

Almost surely, 2^9642039913 is an apocalyptic number.

It is an amenable number.

9642039913 is a deficient number, since it is larger than the sum of its proper divisors (876549095).

9642039913 is a wasteful number, since it uses less digits than its factorization.

9642039913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876549094.

The product of its (nonzero) digits is 314928, while the sum is 46.

The square root of 9642039913 is about 98193.8893872730. The cubic root of 9642039913 is about 2128.4149870029.

The spelling of 9642039913 in words is "nine billion, six hundred forty-two million, thirty-nine thousand, nine hundred thirteen".