99390881607 has 8 divisors (see below), whose sum is σ = 132550926576. Its totient is φ = 66245712192.

The previous prime is 99390881561. The next prime is 99390881641. The reversal of 99390881607 is 70618809399.

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

It is not a de Polignac number, because 99390881607 - 2⁶ = 99390881543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99390881207) 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, 3703288 + ... + 3730029.

It is an arithmetic number, because the mean of its divisors is an integer number (16568865822).

Almost surely, 2^99390881607 is an apocalyptic number.

99390881607 is a deficient number, since it is larger than the sum of its proper divisors (33160044969).

99390881607 is a wasteful number, since it uses less digits than its factorization.

99390881607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7437777.

The product of its (nonzero) digits is 5878656, while the sum is 60.

The spelling of 99390881607 in words is "ninety-nine billion, three hundred ninety million, eight hundred eighty-one thousand, six hundred seven".