9902943 has 12 divisors (see below), whose sum is σ = 14637480. Its totient is φ = 6448176.

The previous prime is 9902929. The next prime is 9902951. The reversal of 9902943 is 3492099.

It is not a de Polignac number, because 9902943 - 2⁴ = 9902927 is a prime.

It is a super-2 number, since 2×9902943² = 196136560122498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9902898 and 9902907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902983) 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, 12408 + ... + 13181.

It is an arithmetic number, because the mean of its divisors is an integer number (1219790).

Almost surely, 2^9902943 is an apocalyptic number.

9902943 is a deficient number, since it is larger than the sum of its proper divisors (4734537).

9902943 is a wasteful number, since it uses less digits than its factorization.

9902943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25638 (or 25635 counting only the distinct ones).

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

The square root of 9902943 is about 3146.8941831590. The cubic root of 9902943 is about 214.7441918829.

The spelling of 9902943 in words is "nine million, nine hundred two thousand, nine hundred forty-three".