99996431 has 4 divisors (see below), whose sum is σ = 105878592. Its totient is φ = 94114272.

The previous prime is 99996419. The next prime is 99996473. The reversal of 99996431 is 13469999.

It is a happy number.

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 99996431 - 2¹⁰ = 99995407 is a prime.

It is a super-2 number, since 2×99996431² = 19998572425475522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 99996431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99996131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2941055 + ... + 2941088.

It is an arithmetic number, because the mean of its divisors is an integer number (26469648).

Almost surely, 2^99996431 is an apocalyptic number.

99996431 is a deficient number, since it is larger than the sum of its proper divisors (5882161).

99996431 is a wasteful number, since it uses less digits than its factorization.

99996431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882160.

The product of its digits is 472392, while the sum is 50.

The square root of 99996431 is about 9999.8215484078. The cubic root of 99996431 is about 464.1533613521.

The spelling of 99996431 in words is "ninety-nine million, nine hundred ninety-six thousand, four hundred thirty-one".