990988726 has 32 divisors (see below), whose sum is σ = 1831652928. Its totient is φ = 391582080.

The previous prime is 990988711. The next prime is 990988727. The reversal of 990988726 is 627889099.

990988726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990988727) 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, 183156 + ... + 188488.

It is an arithmetic number, because the mean of its divisors is an integer number (57239154).

Almost surely, 2^990988726 is an apocalyptic number.

990988726 is a deficient number, since it is larger than the sum of its proper divisors (840664202).

990988726 is a wasteful number, since it uses less digits than its factorization.

990988726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376.

The product of its (nonzero) digits is 3919104, while the sum is 58.

The square root of 990988726 is about 31479.9734116787. The cubic root of 990988726 is about 996.9871739954.

The spelling of 990988726 in words is "nine hundred ninety million, nine hundred eighty-eight thousand, seven hundred twenty-six".