441887977 has 4 divisors (see below), whose sum is σ = 450225540. Its totient is φ = 433550416.

The previous prime is 441887951. The next prime is 441887989. The reversal of 441887977 is 779788144.

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 212547241 + 229340736 = 14579^2 + 15144^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-441887977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (441887917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4168702 + ... + 4168807.

It is an arithmetic number, because the mean of its divisors is an integer number (112556385).

Almost surely, 2^441887977 is an apocalyptic number.

It is an amenable number.

441887977 is a deficient number, since it is larger than the sum of its proper divisors (8337563).

441887977 is an equidigital number, since it uses as much as digits as its factorization.

441887977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8337562.

The product of its digits is 3161088, while the sum is 55.

The square root of 441887977 is about 21021.1316774335. The cubic root of 441887977 is about 761.6768015310.

The spelling of 441887977 in words is "four hundred forty-one million, eight hundred eighty-seven thousand, nine hundred seventy-seven".