990443031441 has 8 divisors (see below), whose sum is σ = 1320605333184. Its totient is φ = 660288042000.

The previous prime is 990443031373. The next prime is 990443031463. The reversal of 990443031441 is 144130344099.

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

It is not a de Polignac number, because 990443031441 - 2⁷ = 990443031313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 990443031393 and 990443031402.

It is not an unprimeable number, because it can be changed into a prime (990443031041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1503810 + ... + 2059691.

It is an arithmetic number, because the mean of its divisors is an integer number (165075666648).

Almost surely, 2^990443031441 is an apocalyptic number.

It is an amenable number.

990443031441 is a deficient number, since it is larger than the sum of its proper divisors (330162301743).

990443031441 is a wasteful number, since it uses less digits than its factorization.

990443031441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656151.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 990443031441 in words is "nine hundred ninety billion, four hundred forty-three million, thirty-one thousand, four hundred forty-one".