99343434421 has 24 divisors (see below), whose sum is σ = 126708554016. Its totient is φ = 77017439520.

The previous prime is 99343434383. The next prime is 99343434451. The reversal of 99343434421 is 12443434399.

It is not a de Polignac number, because 99343434421 - 2⁹ = 99343433909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99343434451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 361611 + ... + 573976.

It is an arithmetic number, because the mean of its divisors is an integer number (5279523084).

Almost surely, 2^99343434421 is an apocalyptic number.

It is an amenable number.

99343434421 is a deficient number, since it is larger than the sum of its proper divisors (27365119595).

99343434421 is a wasteful number, since it uses less digits than its factorization.

99343434421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935809 (or 935802 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 46.

The spelling of 99343434421 in words is "ninety-nine billion, three hundred forty-three million, four hundred thirty-four thousand, four hundred twenty-one".