99999355 has 8 divisors (see below), whose sum is σ = 127058112. Its totient is φ = 75293568.

The previous prime is 99999353. The next prime is 99999373. The reversal of 99999355 is 55399999.

It is a happy number.

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 99999355 - 2¹ = 99999353 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 99999355.

It is not an unprimeable number, because it can be changed into a prime (99999353) 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, 588147 + ... + 588316.

It is an arithmetic number, because the mean of its divisors is an integer number (15882264).

Almost surely, 2^99999355 is an apocalyptic number.

99999355 is a deficient number, since it is larger than the sum of its proper divisors (27058757).

99999355 is a wasteful number, since it uses less digits than its factorization.

99999355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1176485.

The product of its digits is 4428675, while the sum is 58.

The square root of 99999355 is about 9999.9677499480. The cubic root of 99999355 is about 464.1578854175.

The spelling of 99999355 in words is "ninety-nine million, nine hundred ninety-nine thousand, three hundred fifty-five".