990305011 has 4 divisors (see below), whose sum is σ = 990370224. Its totient is φ = 990239800.

The previous prime is 990304981. The next prime is 990305051. The reversal of 990305011 is 110503099.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 110503099 = 7 ⋅15786157.

It is a cyclic number.

It is not a de Polignac number, because 990305011 - 2⁷ = 990304883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990305051) 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, 3501 + ... + 44641.

It is an arithmetic number, because the mean of its divisors is an integer number (247592556).

Almost surely, 2^990305011 is an apocalyptic number.

990305011 is a deficient number, since it is larger than the sum of its proper divisors (65213).

990305011 is a wasteful number, since it uses less digits than its factorization.

990305011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65212.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 990305011 is about 31469.1120147995. The cubic root of 990305011 is about 996.7578367375.

The spelling of 990305011 in words is "nine hundred ninety million, three hundred five thousand, eleven".