9942895 has 4 divisors (see below), whose sum is σ = 11931480. Its totient is φ = 7954312.

The previous prime is 9942893. The next prime is 9942917. The reversal of 9942895 is 5982499.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5982499 = 149 ⋅40151.

It is a cyclic number.

It is not a de Polignac number, because 9942895 - 2¹ = 9942893 is a prime.

It is a super-2 number, since 2×9942895² = 197722321962050, which contains 22 as substring.

9942895 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942893) 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, 994285 + ... + 994294.

It is an arithmetic number, because the mean of its divisors is an integer number (2982870).

Almost surely, 2^9942895 is an apocalyptic number.

9942895 is a deficient number, since it is larger than the sum of its proper divisors (1988585).

9942895 is a wasteful number, since it uses less digits than its factorization.

9942895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988584.

The product of its digits is 233280, while the sum is 46.

The square root of 9942895 is about 3153.2356397834. The cubic root of 9942895 is about 215.0325892550.

The spelling of 9942895 in words is "nine million, nine hundred forty-two thousand, eight hundred ninety-five".