9942655 has 4 divisors (see below), whose sum is σ = 11931192. Its totient is φ = 7954120.

The previous prime is 9942629. The next prime is 9942659. The reversal of 9942655 is 5562499.

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

It is not a de Polignac number, because 9942655 - 2⁹ = 9942143 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942659) 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, 994261 + ... + 994270.

It is an arithmetic number, because the mean of its divisors is an integer number (2982798).

Almost surely, 2^9942655 is an apocalyptic number.

9942655 is a deficient number, since it is larger than the sum of its proper divisors (1988537).

9942655 is a wasteful number, since it uses less digits than its factorization.

9942655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988536.

The product of its digits is 97200, while the sum is 40.

The square root of 9942655 is about 3153.1975834064. The cubic root of 9942655 is about 215.0308591004.

The spelling of 9942655 in words is "nine million, nine hundred forty-two thousand, six hundred fifty-five".