990200111 has 4 divisors (see below), whose sum is σ = 990613224. Its totient is φ = 989787000.

The previous prime is 990200093. The next prime is 990200119. The reversal of 990200111 is 111002099.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 990200111 - 2¹⁰ = 990199087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990200119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202940 + ... + 207761.

It is an arithmetic number, because the mean of its divisors is an integer number (247653306).

Almost surely, 2^990200111 is an apocalyptic number.

990200111 is a deficient number, since it is larger than the sum of its proper divisors (413113).

990200111 is a wasteful number, since it uses less digits than its factorization.

990200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413112.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 990200111 is about 31467.4452569636. The cubic root of 990200111 is about 996.7226409853.

The spelling of 990200111 in words is "nine hundred ninety million, two hundred thousand, one hundred eleven".