1100009990 has 64 divisors (see below), whose sum is σ = 2144029824. Its totient is φ = 404840448.

The previous prime is 1100009987. The next prime is 1100010001. The reversal of 1100009990 is 999000011.

1100009990 is a modest number, since divided by 9990 gives 1100 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1699847 + ... + 1700493.

It is an arithmetic number, because the mean of its divisors is an integer number (33500466).

Almost surely, 2^1100009990 is an apocalyptic number.

1100009990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1100009990 is a deficient number, since it is larger than the sum of its proper divisors (1044019834).

1100009990 is a wasteful number, since it uses less digits than its factorization.

1100009990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 1100009990 is about 33166.3985081287. The cubic root of 1100009990 is about 1032.2832404403.

The spelling of 1100009990 in words is "one billion, one hundred million, nine thousand, nine hundred ninety".