387844447 has 8 divisors (see below), whose sum is σ = 391586832. Its totient is φ = 384120000.

The previous prime is 387844439. The next prime is 387844489. The reversal of 387844447 is 744448783.

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

It is a cyclic number.

It is not a de Polignac number, because 387844447 - 2³ = 387844439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 387844447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387844427) 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, 41163 + ... + 49699.

It is an arithmetic number, because the mean of its divisors is an integer number (48948354).

Almost surely, 2^387844447 is an apocalyptic number.

387844447 is a deficient number, since it is larger than the sum of its proper divisors (3742385).

387844447 is a wasteful number, since it uses less digits than its factorization.

387844447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8969.

The product of its digits is 2408448, while the sum is 49.

The square root of 387844447 is about 19693.7667042138. The cubic root of 387844447 is about 729.2658203180.

The spelling of 387844447 in words is "three hundred eighty-seven million, eight hundred forty-four thousand, four hundred forty-seven".