99434643499 has 4 divisors (see below), whose sum is σ = 100632651336. Its totient is φ = 98236635664.

The previous prime is 99434643439. The next prime is 99434643541.

99434643499 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 99434643499 - 2⁹ = 99434642987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99434643499.

It is not an unprimeable number, because it can be changed into a prime (99434643409) 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, 599003794 + ... + 599003959.

It is an arithmetic number, because the mean of its divisors is an integer number (25158162834).

Almost surely, 2^99434643499 is an apocalyptic number.

99434643499 is a deficient number, since it is larger than the sum of its proper divisors (1198007837).

99434643499 is a wasteful number, since it uses less digits than its factorization.

99434643499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198007836.

The product of its digits is 90699264, while the sum is 64.

The spelling of 99434643499 in words is "ninety-nine billion, four hundred thirty-four million, six hundred forty-three thousand, four hundred ninety-nine".