441978353 has 2 divisors, whose sum is σ = 441978354. Its totient is φ = 441978352.

The previous prime is 441978331. The next prime is 441978371. The reversal of 441978353 is 353879144.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 389154529 + 52823824 = 19727^2 + 7268^2 .

It is a cyclic number.

It is not a de Polignac number, because 441978353 - 2²² = 437784049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (441974353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220989176 + 220989177.

It is an arithmetic number, because the mean of its divisors is an integer number (220989177).

Almost surely, 2^441978353 is an apocalyptic number.

It is an amenable number.

441978353 is a deficient number, since it is larger than the sum of its proper divisors (1).

441978353 is an equidigital number, since it uses as much as digits as its factorization.

441978353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 44.

The square root of 441978353 is about 21023.2812139304. The cubic root of 441978353 is about 761.7287246531.

The spelling of 441978353 in words is "four hundred forty-one million, nine hundred seventy-eight thousand, three hundred fifty-three".