444091620 has 48 divisors (see below), whose sum is σ = 1421094528. Its totient is φ = 101506560.

The previous prime is 444091619. The next prime is 444091633. The reversal of 444091620 is 26190444.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 528261 + ... + 529100.

It is an arithmetic number, because the mean of its divisors is an integer number (29606136).

Almost surely, 2^444091620 is an apocalyptic number.

It is an amenable number.

444091620 is an abundant number, since it is smaller than the sum of its proper divisors (977002908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444091620 is a wasteful number, since it uses less digits than its factorization.

444091620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057380 (or 1057378 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 444091620 is about 21073.4814399520. The cubic root of 444091620 is about 762.9408333245.

The spelling of 444091620 in words is "four hundred forty-four million, ninety-one thousand, six hundred twenty".