384787644 has 12 divisors (see below), whose sum is σ = 897837864. Its totient is φ = 128262544.

The previous prime is 384787643. The next prime is 384787649. The reversal of 384787644 is 446787483.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384787643) 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, 16032807 + ... + 16032830.

It is an arithmetic number, because the mean of its divisors is an integer number (74819822).

Almost surely, 2^384787644 is an apocalyptic number.

It is an amenable number.

384787644 is an abundant number, since it is smaller than the sum of its proper divisors (513050220).

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

384787644 is a wasteful number, since it uses less digits than its factorization.

384787644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32065644 (or 32065642 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 51.

The square root of 384787644 is about 19616.0047920059. The cubic root of 384787644 is about 727.3448575069.

The spelling of 384787644 in words is "three hundred eighty-four million, seven hundred eighty-seven thousand, six hundred forty-four".