99995309 has 8 divisors (see below), whose sum is σ = 111450240. Its totient is φ = 89159616.

The previous prime is 99995303. The next prime is 99995317. The reversal of 99995309 is 90359999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99995309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99995303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154469 + ... + 155114.

It is an arithmetic number, because the mean of its divisors is an integer number (13931280).

Almost surely, 2^99995309 is an apocalyptic number.

It is an amenable number.

99995309 is a deficient number, since it is larger than the sum of its proper divisors (11454931).

99995309 is a wasteful number, since it uses less digits than its factorization.

99995309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309619.

The product of its (nonzero) digits is 885735, while the sum is 53.

The square root of 99995309 is about 9999.7654472493. The cubic root of 99995309 is about 464.1516253500.

The spelling of 99995309 in words is "ninety-nine million, nine hundred ninety-five thousand, three hundred nine".