9991502441 has 8 divisors (see below), whose sum is σ = 10238421600. Its totient is φ = 9747169120.

The previous prime is 9991502413. The next prime is 9991502447. The reversal of 9991502441 is 1442051999.

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-9991502441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9991502392 and 9991502401.

It is not an unprimeable number, because it can be changed into a prime (9991502447) 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, 638636 + ... + 654093.

It is an arithmetic number, because the mean of its divisors is an integer number (1279802700).

Almost surely, 2^9991502441 is an apocalyptic number.

It is an amenable number.

9991502441 is a deficient number, since it is larger than the sum of its proper divisors (246919159).

9991502441 is a wasteful number, since it uses less digits than its factorization.

9991502441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292919.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 9991502441 is about 99957.5031750994. The cubic root of 9991502441 is about 2153.8242692333.

The spelling of 9991502441 in words is "nine billion, nine hundred ninety-one million, five hundred two thousand, four hundred forty-one".