9041243991 has 8 divisors (see below), whose sum is σ = 12982299120. Its totient is φ = 5563842432.

The previous prime is 9041243831. The next prime is 9041244001. The reversal of 9041243991 is 1993421409.

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

It is not a de Polignac number, because 9041243991 - 2¹⁷ = 9041112919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9041243591) 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, 115913346 + ... + 115913423.

It is an arithmetic number, because the mean of its divisors is an integer number (1622787390).

Almost surely, 2^9041243991 is an apocalyptic number.

9041243991 is a deficient number, since it is larger than the sum of its proper divisors (3941055129).

9041243991 is a wasteful number, since it uses less digits than its factorization.

9041243991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231826785.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 9041243991 is about 95085.4562538352. The cubic root of 9041243991 is about 2083.2564245585.

The spelling of 9041243991 in words is "nine billion, forty-one million, two hundred forty-three thousand, nine hundred ninety-one".