444920613 has 8 divisors (see below), whose sum is σ = 607023648. Its totient is φ = 289715664.

The previous prime is 444920611. The next prime is 444920621. The reversal of 444920613 is 316029444.

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

It is not a de Polignac number, because 444920613 - 2¹ = 444920611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444920611) 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, 1724370 + ... + 1724627.

It is an arithmetic number, because the mean of its divisors is an integer number (75877956).

Almost surely, 2^444920613 is an apocalyptic number.

444920613 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

444920613 is a deficient number, since it is larger than the sum of its proper divisors (162103035).

444920613 is a wasteful number, since it uses less digits than its factorization.

444920613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3449043.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 444920613 is about 21093.1413734417. The cubic root of 444920613 is about 763.4152695598.

The spelling of 444920613 in words is "four hundred forty-four million, nine hundred twenty thousand, six hundred thirteen".