3912642784 has 24 divisors (see below), whose sum is σ = 7724027808. Its totient is φ = 1950984960.

The previous prime is 3912642781. The next prime is 3912642827. The reversal of 3912642784 is 4872462193.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3912642781) 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, 154837 + ... + 178324.

It is an arithmetic number, because the mean of its divisors is an integer number (321834492).

Almost surely, 2^3912642784 is an apocalyptic number.

It is an amenable number.

3912642784 is a deficient number, since it is larger than the sum of its proper divisors (3811385024).

3912642784 is a wasteful number, since it uses less digits than its factorization.

3912642784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333538 (or 333530 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 3912642784 is about 62551.1213648484. The cubic root of 3912642784 is about 1575.7599804540.

The spelling of 3912642784 in words is "three billion, nine hundred twelve million, six hundred forty-two thousand, seven hundred eighty-four".