9942669 has 20 divisors (see below), whose sum is σ = 16204320. Its totient is φ = 6025320.

The previous prime is 9942659. The next prime is 9942683. The reversal of 9942669 is 9662499.

It is not a de Polignac number, because 9942669 - 2¹⁵ = 9909901 is a prime.

It is a super-2 number, since 2×9942669² = 197713333687122, which contains 22 as substring.

It is a Curzon number.

9942669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9942619) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4689 + ... + 6470.

It is an arithmetic number, because the mean of its divisors is an integer number (810216).

Almost surely, 2^9942669 is an apocalyptic number.

9942669 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

It is an amenable number.

9942669 is a deficient number, since it is larger than the sum of its proper divisors (6261651).

9942669 is a wasteful number, since it uses less digits than its factorization.

9942669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11182 (or 11173 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 9942669 is about 3153.1998033743. The cubic root of 9942669 is about 215.0309600268.

It can be divided in two parts, 994 and 2669, that added together give a palindrome (3663).

The spelling of 9942669 in words is "nine million, nine hundred forty-two thousand, six hundred sixty-nine".