9942905 has 8 divisors (see below), whose sum is σ = 13636032. Its totient is φ = 6817968.

The previous prime is 9942893. The next prime is 9942917. The reversal of 9942905 is 5092499.

It is an interprime number because it is at equal distance from previous prime (9942893) and next prime (9942917).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9942905 - 2¹⁰ = 9941881 is a prime.

It is a super-2 number, since 2×9942905² = 197722719678050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142007 + ... + 142076.

It is an arithmetic number, because the mean of its divisors is an integer number (1704504).

Almost surely, 2^9942905 is an apocalyptic number.

It is an amenable number.

9942905 is a deficient number, since it is larger than the sum of its proper divisors (3693127).

9942905 is a wasteful number, since it uses less digits than its factorization.

9942905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284095.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 9942905 is about 3153.2372254558. The cubic root of 9942905 is about 215.0326613442.

The spelling of 9942905 in words is "nine million, nine hundred forty-two thousand, nine hundred five".