990548841 has 4 divisors (see below), whose sum is σ = 1320731792. Its totient is φ = 660365892.

The previous prime is 990548833. The next prime is 990548849. The reversal of 990548841 is 148845099.

990548841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (990548833) and next prime (990548849).

It is not a de Polignac number, because 990548841 - 2³ = 990548833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (990548849) 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, 165091471 + ... + 165091476.

It is an arithmetic number, because the mean of its divisors is an integer number (330182948).

Almost surely, 2^990548841 is an apocalyptic number.

It is an amenable number.

990548841 is a deficient number, since it is larger than the sum of its proper divisors (330182951).

990548841 is a wasteful number, since it uses less digits than its factorization.

990548841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330182950.

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 990548841 is about 31472.9858926667. The cubic root of 990548841 is about 996.8396362897.

The spelling of 990548841 in words is "nine hundred ninety million, five hundred forty-eight thousand, eight hundred forty-one".