444772869 has 4 divisors (see below), whose sum is σ = 593030496. Its totient is φ = 296515244.

The previous prime is 444772817. The next prime is 444772877. The reversal of 444772869 is 968277444.

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.

It is a cyclic number.

It is not a de Polignac number, because 444772869 - 2¹⁷ = 444641797 is a prime.

It is a super-2 number, since 2×444772869² = 395645809996982322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444772969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74128809 + ... + 74128814.

It is an arithmetic number, because the mean of its divisors is an integer number (148257624).

Almost surely, 2^444772869 is an apocalyptic number.

It is an amenable number.

444772869 is a deficient number, since it is larger than the sum of its proper divisors (148257627).

444772869 is a wasteful number, since it uses less digits than its factorization.

444772869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148257626.

The product of its digits is 2709504, while the sum is 51.

The square root of 444772869 is about 21089.6389016028. The cubic root of 444772869 is about 763.3307582191.

The spelling of 444772869 in words is "four hundred forty-four million, seven hundred seventy-two thousand, eight hundred sixty-nine".