444187693 has 4 divisors (see below), whose sum is σ = 459504540. Its totient is φ = 428870848.

The previous prime is 444187687. The next prime is 444187703. The reversal of 444187693 is 396781444.

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 340697764 + 103489929 = 18458^2 + 10173^2 .

It is a cyclic number.

It is not a de Polignac number, because 444187693 - 2¹⁷ = 444056621 is a prime.

It is a super-2 number, since 2×444187693² = 394605413225324498, which 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 (444187633) 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, 7658380 + ... + 7658437.

It is an arithmetic number, because the mean of its divisors is an integer number (114876135).

Almost surely, 2^444187693 is an apocalyptic number.

It is an amenable number.

444187693 is a deficient number, since it is larger than the sum of its proper divisors (15316847).

444187693 is a wasteful number, since it uses less digits than its factorization.

444187693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15316846.

The product of its digits is 580608, while the sum is 46.

The square root of 444187693 is about 21075.7607929109. The cubic root of 444187693 is about 762.9958465443.

The spelling of 444187693 in words is "four hundred forty-four million, one hundred eighty-seven thousand, six hundred ninety-three".