444720076021 has 8 divisors (see below), whose sum is σ = 480123655704. Its totient is φ = 409487116800.

The previous prime is 444720075929. The next prime is 444720076033. The reversal of 444720076021 is 120670027444.

It can be written as a sum of positive squares in 4 ways, for example, as 56791656100 + 387928419921 = 238310^2 + 622839^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 444720076021 - 2⁷ = 444720075893 is a prime.

It is a super-2 number, since 2×444720076021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444720076081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42649696 + ... + 42660121.

It is an arithmetic number, because the mean of its divisors is an integer number (60015456963).

Almost surely, 2^444720076021 is an apocalyptic number.

It is an amenable number.

444720076021 is a deficient number, since it is larger than the sum of its proper divisors (35403579683).

444720076021 is a wasteful number, since it uses less digits than its factorization.

444720076021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85310231.

The product of its (nonzero) digits is 75264, while the sum is 37.

The spelling of 444720076021 in words is "four hundred forty-four billion, seven hundred twenty million, seventy-six thousand, twenty-one".