9920243 has 8 divisors (see below), whose sum is σ = 10257408. Its totient is φ = 9588424.

The previous prime is 9920219. The next prime is 9920249. The reversal of 9920243 is 3420299.

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 9920243 - 2¹⁶ = 9854707 is a prime.

It is a super-2 number, since 2×9920243² = 196822442358098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2630 + ... + 5172.

It is an arithmetic number, because the mean of its divisors is an integer number (1282176).

Almost surely, 2^9920243 is an apocalyptic number.

9920243 is a deficient number, since it is larger than the sum of its proper divisors (337165).

9920243 is a wasteful number, since it uses less digits than its factorization.

9920243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2673.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 9920243 is about 3149.6417256571. The cubic root of 9920243 is about 214.8691686452.

The spelling of 9920243 in words is "nine million, nine hundred twenty thousand, two hundred forty-three".