1020440441 has 4 divisors (see below), whose sum is σ = 1021210752. Its totient is φ = 1019670132.

The previous prime is 1020440437. The next prime is 1020440483. The reversal of 1020440441 is 1440440201.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1440440201 = 53 ⋅27178117.

It is a cyclic number.

It is not a de Polignac number, because 1020440441 - 2² = 1020440437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020440401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383165 + ... + 385818.

It is an arithmetic number, because the mean of its divisors is an integer number (255302688).

Almost surely, 2^1020440441 is an apocalyptic number.

It is an amenable number.

1020440441 is a deficient number, since it is larger than the sum of its proper divisors (770311).

1020440441 is an equidigital number, since it uses as much as digits as its factorization.

1020440441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770310.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1020440441 is about 31944.3334724643. Note that the first 3 decimals coincide. The cubic root of 1020440441 is about 1006.7675769174.

Adding to 1020440441 its reverse (1440440201), we get a palindrome (2460880642).

The spelling of 1020440441 in words is "one billion, twenty million, four hundred forty thousand, four hundred forty-one".