9957243 has 4 divisors (see below), whose sum is σ = 13276328. Its totient is φ = 6638160.

The previous prime is 9957203. The next prime is 9957247. The reversal of 9957243 is 3427599.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9957243 - 2¹⁴ = 9940859 is a prime.

It is a super-2 number, since 2×9957243² = 198293376322098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9957247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1659538 + ... + 1659543.

It is an arithmetic number, because the mean of its divisors is an integer number (3319082).

Almost surely, 2^9957243 is an apocalyptic number.

9957243 is a deficient number, since it is larger than the sum of its proper divisors (3319085).

9957243 is a wasteful number, since it uses less digits than its factorization.

9957243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3319084.

The product of its digits is 68040, while the sum is 39.

The square root of 9957243 is about 3155.5099429411. The cubic root of 9957243 is about 215.1359731190.

The spelling of 9957243 in words is "nine million, nine hundred fifty-seven thousand, two hundred forty-three".