990001101 has 16 divisors (see below), whose sum is σ = 1367164800. Its totient is φ = 636474048.

The previous prime is 990001097. The next prime is 990001127. The reversal of 990001101 is 101100099.

It is not a de Polignac number, because 990001101 - 2² = 990001097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990001301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70755 + ... + 83583.

It is an arithmetic number, because the mean of its divisors is an integer number (85447800).

Almost surely, 2^990001101 is an apocalyptic number.

It is an amenable number.

990001101 is a deficient number, since it is larger than the sum of its proper divisors (377163699).

990001101 is a wasteful number, since it uses less digits than its factorization.

990001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13748.

The product of its (nonzero) digits is 81, while the sum is 21.

The square root of 990001101 is about 31464.2829411382. The cubic root of 990001101 is about 996.6558628797.

The spelling of 990001101 in words is "nine hundred ninety million, one thousand, one hundred one".