9243989491 has 8 divisors (see below), whose sum is σ = 10085234544. Its totient is φ = 8402891520.

The previous prime is 9243989473. The next prime is 9243989507. The reversal of 9243989491 is 1949893429.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9243989491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9243989291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125995 + ... + 185371.

It is an arithmetic number, because the mean of its divisors is an integer number (1260654318).

Almost surely, 2^9243989491 is an apocalyptic number.

9243989491 is a deficient number, since it is larger than the sum of its proper divisors (841245053).

9243989491 is a wasteful number, since it uses less digits than its factorization.

9243989491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73541.

The product of its digits is 5038848, while the sum is 58.

The square root of 9243989491 is about 96145.6680823426. The cubic root of 9243989491 is about 2098.7134592177.

The spelling of 9243989491 in words is "nine billion, two hundred forty-three million, nine hundred eighty-nine thousand, four hundred ninety-one".