99999907 has 8 divisors (see below), whose sum is σ = 120300800.
Its totient is φ = 81202824.
The previous prime is 99999847. The next prime is 99999931. The reversal of 99999907 is 70999999.
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 99999907 - 215 = 99967139 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (99999307) 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, 375807 + ... + 376072.
It is an arithmetic number, because the mean of its divisors is an integer number (15037600).
Almost surely, 299999907 is an apocalyptic number.
99999907 is the 5774-th hex number.
99999907 is a deficient number, since it is larger than the sum of its proper divisors (20300893).
99999907 is a wasteful number, since it uses less digits than its factorization.
99999907 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 751905.
The product of its (nonzero) digits is 3720087, while the sum is 61.
The square root of 99999907 is about 9999.9953499989.
The cubic root of 99999907 is about 464.1587394720.
The spelling of 99999907 in words is "ninety-nine million, nine hundred ninety-nine thousand, nine hundred seven".