9920943 has 12 divisors (see below), whose sum is σ = 14377168. Its totient is φ = 6592320.

The previous prime is 9920923. The next prime is 9920947. The reversal of 9920943 is 3490299.

It is not a de Polignac number, because 9920943 - 2²² = 5726639 is a prime.

It is a super-2 number, since 2×9920943² = 196850220018498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9920898 and 9920907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1398 + ... + 4668.

Almost surely, 2^9920943 is an apocalyptic number.

9920943 is a deficient number, since it is larger than the sum of its proper divisors (4456225).

9920943 is a wasteful number, since it uses less digits than its factorization.

9920943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3614 (or 3611 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 9920943 is about 3149.7528474469. The cubic root of 9920943 is about 214.8742224489.

The spelling of 9920943 in words is "nine million, nine hundred twenty thousand, nine hundred forty-three".