441621385 has 4 divisors (see below), whose sum is σ = 529945668. Its totient is φ = 353297104.

The previous prime is 441621361. The next prime is 441621451. The reversal of 441621385 is 583126144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102030201 + 339591184 = 10101^2 + 18428^2 .

It is a cyclic number.

It is not a de Polignac number, because 441621385 - 2²¹ = 439524233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 441621385.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44162134 + ... + 44162143.

It is an arithmetic number, because the mean of its divisors is an integer number (132486417).

Almost surely, 2^441621385 is an apocalyptic number.

It is an amenable number.

441621385 is a deficient number, since it is larger than the sum of its proper divisors (88324283).

441621385 is an equidigital number, since it uses as much as digits as its factorization.

441621385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88324282.

The product of its digits is 23040, while the sum is 34.

The square root of 441621385 is about 21014.7896729898. The cubic root of 441621385 is about 761.5235969474.

The spelling of 441621385 in words is "four hundred forty-one million, six hundred twenty-one thousand, three hundred eighty-five".