99338453391 has 4 divisors (see below), whose sum is σ = 132451271192. Its totient is φ = 66225635592.

The previous prime is 99338453381. The next prime is 99338453441. The reversal of 99338453391 is 19335483399.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 99338453391 - 2⁵ = 99338453359 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 (99338453381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16556408896 + ... + 16556408901.

It is an arithmetic number, because the mean of its divisors is an integer number (33112817798).

Almost surely, 2^99338453391 is an apocalyptic number.

99338453391 is a deficient number, since it is larger than the sum of its proper divisors (33112817801).

99338453391 is a wasteful number, since it uses less digits than its factorization.

99338453391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33112817800.

The product of its digits is 9447840, while the sum is 57.

The spelling of 99338453391 in words is "ninety-nine billion, three hundred thirty-eight million, four hundred fifty-three thousand, three hundred ninety-one".