99190090991 has 8 divisors (see below), whose sum is σ = 99338279040. Its totient is φ = 99041980288.

The previous prime is 99190090969. The next prime is 99190090999. The reversal of 99190090991 is 19909009199.

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-99190090991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99190090999) 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, 2861435 + ... + 2895891.

It is an arithmetic number, because the mean of its divisors is an integer number (12417284880).

Almost surely, 2^99190090991 is an apocalyptic number.

99190090991 is a deficient number, since it is larger than the sum of its proper divisors (148188049).

99190090991 is a wasteful number, since it uses less digits than its factorization.

99190090991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38673.

The product of its (nonzero) digits is 531441, while the sum is 56.

The spelling of 99190090991 in words is "ninety-nine billion, one hundred ninety million, ninety thousand, nine hundred ninety-one".