99996491 has 16 divisors (see below), whose sum is σ = 116793600. Its totient is φ = 83848608.

The previous prime is 99996473. The next prime is 99996509. The reversal of 99996491 is 19469999.

It is an interprime number because it is at equal distance from previous prime (99996473) and next prime (99996509).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99996491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99996191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62540 + ... + 64118.

It is an arithmetic number, because the mean of its divisors is an integer number (7299600).

Almost surely, 2^99996491 is an apocalyptic number.

99996491 is a deficient number, since it is larger than the sum of its proper divisors (16797109).

99996491 is a wasteful number, since it uses less digits than its factorization.

99996491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778.

The product of its digits is 1417176, while the sum is 56.

The square root of 99996491 is about 9999.8245484608. The cubic root of 99996491 is about 464.1534541860.

The spelling of 99996491 in words is "ninety-nine million, nine hundred ninety-six thousand, four hundred ninety-one".