99993491 has 8 divisors (see below), whose sum is σ = 108348240. Its totient is φ = 91733472.

The previous prime is 99993469. The next prime is 99993497. The reversal of 99993491 is 19439999.

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

It is a cyclic number.

It is not a de Polignac number, because 99993491 - 2⁶ = 99993427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99993497) 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 7 ways as a sum of consecutive naturals, for example, 21476 + ... + 25713.

It is an arithmetic number, because the mean of its divisors is an integer number (13543530).

Almost surely, 2^99993491 is an apocalyptic number.

99993491 is a deficient number, since it is larger than the sum of its proper divisors (8354749).

99993491 is a wasteful number, since it uses less digits than its factorization.

99993491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47365.

The product of its digits is 708588, while the sum is 53.

The square root of 99993491 is about 9999.6745447039. The cubic root of 99993491 is about 464.1488124422.

The spelling of 99993491 in words is "ninety-nine million, nine hundred ninety-three thousand, four hundred ninety-one".