99969955 has 8 divisors (see below), whose sum is σ = 120909312. Its totient is φ = 79345728.

The previous prime is 99969949. The next prime is 99970007. The reversal of 99969955 is 55996999.

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 99969955 - 2⁷ = 99969827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99969893 and 99969902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78082 + ... + 79351.

It is an arithmetic number, because the mean of its divisors is an integer number (15113664).

Almost surely, 2^99969955 is an apocalyptic number.

99969955 is a deficient number, since it is larger than the sum of its proper divisors (20939357).

99969955 is a wasteful number, since it uses less digits than its factorization.

99969955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157565.

The product of its digits is 8857350, while the sum is 61.

The square root of 99969955 is about 9998.4976371453. The cubic root of 99969955 is about 464.1123931928.

The spelling of 99969955 in words is "ninety-nine million, nine hundred sixty-nine thousand, nine hundred fifty-five".