990541943 has 8 divisors (see below), whose sum is σ = 1035439200. Its totient is φ = 945797248.

The previous prime is 990541933. The next prime is 990541957. The reversal of 990541943 is 349145099.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 990541943 - 2⁶ = 990541879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 990541894 and 990541903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990541913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24758 + ... + 50931.

It is an arithmetic number, because the mean of its divisors is an integer number (129429900).

Almost surely, 2^990541943 is an apocalyptic number.

990541943 is a deficient number, since it is larger than the sum of its proper divisors (44897257).

990541943 is a wasteful number, since it uses less digits than its factorization.

990541943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76281.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 990541943 is about 31472.8763064325. The cubic root of 990541943 is about 996.8373223483.

The spelling of 990541943 in words is "nine hundred ninety million, five hundred forty-one thousand, nine hundred forty-three".