99935599 has 4 divisors (see below), whose sum is σ = 103159360. Its totient is φ = 96711840.

The previous prime is 99935597. The next prime is 99935617. The reversal of 99935599 is 99553999.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99553999 = 71 ⋅1402169.

It is a cyclic number.

It is not a de Polignac number, because 99935599 - 2¹ = 99935597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99935597) 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, 1611834 + ... + 1611895.

It is an arithmetic number, because the mean of its divisors is an integer number (25789840).

Almost surely, 2^99935599 is an apocalyptic number.

99935599 is a deficient number, since it is larger than the sum of its proper divisors (3223761).

99935599 is a wasteful number, since it uses less digits than its factorization.

99935599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223760.

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

The square root of 99935599 is about 9996.7794313969. The cubic root of 99935599 is about 464.0592209762.

The spelling of 99935599 in words is "ninety-nine million, nine hundred thirty-five thousand, five hundred ninety-nine".