9900055 has 8 divisors (see below), whose sum is σ = 12960144. Its totient is φ = 7200000.

The previous prime is 9900047. The next prime is 9900091. The reversal of 9900055 is 5500099.

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

It is not a de Polignac number, because 9900055 - 2³ = 9900047 is a prime.

It is a super-2 number, since 2×9900055² = 196022178006050, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9899996 and 9900032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89946 + ... + 90055.

It is an arithmetic number, because the mean of its divisors is an integer number (1620018).

Almost surely, 2^9900055 is an apocalyptic number.

9900055 is a deficient number, since it is larger than the sum of its proper divisors (3060089).

9900055 is a wasteful number, since it uses less digits than its factorization.

9900055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180017.

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 9900055 is about 3146.4352845721. The cubic root of 9900055 is about 214.7233145362.

The spelling of 9900055 in words is "nine million, nine hundred thousand, fifty-five".