99943313 has 8 divisors (see below), whose sum is σ = 101051496. Its totient is φ = 98841600.

The previous prime is 99943307. The next prime is 99943331. The reversal of 99943313 is 31334999.

It can be written as a sum of positive squares in 4 ways, for example, as 283024 + 99660289 = 532^2 + 9983^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99943313 - 2⁸ = 99943057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99943373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33503 + ... + 36363.

It is an arithmetic number, because the mean of its divisors is an integer number (12631437).

Almost surely, 2^99943313 is an apocalyptic number.

It is an amenable number.

99943313 is a deficient number, since it is larger than the sum of its proper divisors (1108183).

99943313 is a wasteful number, since it uses less digits than its factorization.

99943313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235.

The product of its digits is 78732, while the sum is 41.

The square root of 99943313 is about 9997.1652482091. The cubic root of 99943313 is about 464.0711608680.

The spelling of 99943313 in words is "ninety-nine million, nine hundred forty-three thousand, three hundred thirteen".