444639461 has 16 divisors (see below), whose sum is σ = 515145600. Its totient is φ = 375902208.

The previous prime is 444639443. The next prime is 444639467. The reversal of 444639461 is 164936444.

It is a cyclic number.

It is not a de Polignac number, because 444639461 - 2¹⁴ = 444623077 is a prime.

It is a super-3 number, since 3×444639461³ (a number of 27 digits) contains 333 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 (444639467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385061 + ... + 386213.

It is an arithmetic number, because the mean of its divisors is an integer number (32196600).

Almost surely, 2^444639461 is an apocalyptic number.

It is an amenable number.

444639461 is a deficient number, since it is larger than the sum of its proper divisors (70506139).

444639461 is a wasteful number, since it uses less digits than its factorization.

444639461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1868.

The product of its digits is 248832, while the sum is 41.

The square root of 444639461 is about 21086.4757842557. The cubic root of 444639461 is about 763.2544311615.

The spelling of 444639461 in words is "four hundred forty-four million, six hundred thirty-nine thousand, four hundred sixty-one".