444267993 has 16 divisors (see below), whose sum is σ = 644245056. Its totient is φ = 270686400.

The previous prime is 444267983. The next prime is 444267997. The reversal of 444267993 is 399762444.

It is not a de Polignac number, because 444267993 - 2¹⁰ = 444266969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (444267997) 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, 52455 + ... + 60332.

It is an arithmetic number, because the mean of its divisors is an integer number (40265316).

Almost surely, 2^444267993 is an apocalyptic number.

It is an amenable number.

444267993 is a deficient number, since it is larger than the sum of its proper divisors (199977063).

444267993 is a wasteful number, since it uses less digits than its factorization.

444267993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112904.

The product of its digits is 1306368, while the sum is 48.

The square root of 444267993 is about 21077.6657388810. The cubic root of 444267993 is about 763.0418217598.

The spelling of 444267993 in words is "four hundred forty-four million, two hundred sixty-seven thousand, nine hundred ninety-three".