1988959441 has 6 divisors (see below), whose sum is σ = 2313687570. Its totient is φ = 1704822336.

The previous prime is 1988959417. The next prime is 1988959459. The reversal of 1988959441 is 1449598891.

It can be written as a sum of positive squares in only one way, i.e., 1977669841 + 11289600 = 44471^2 + 3360^2 .

It is not a de Polignac number, because 1988959441 - 2¹¹ = 1988957393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1988950441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20295456 + ... + 20295553.

It is an arithmetic number, because the mean of its divisors is an integer number (385614595).

Almost surely, 2^1988959441 is an apocalyptic number.

It is an amenable number.

1988959441 is a deficient number, since it is larger than the sum of its proper divisors (324728129).

1988959441 is an equidigital number, since it uses as much as digits as its factorization.

1988959441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40591023 (or 40591016 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 58.

The square root of 1988959441 is about 44597.7515240399. The cubic root of 1988959441 is about 1257.5983986283.

The spelling of 1988959441 in words is "one billion, nine hundred eighty-eight million, nine hundred fifty-nine thousand, four hundred forty-one".