3879040 has 128 divisors (see below), whose sum is σ = 11016000. Its totient is φ = 1290240.

The previous prime is 3879023. The next prime is 3879047. The reversal of 3879040 is 409783.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3878993 and 3879011.

It is not an unprimeable number, because it can be changed into a prime (3879047) 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, 133746 + ... + 133774.

Almost surely, 2^3879040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3879040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5508000).

3879040 is an abundant number, since it is smaller than the sum of its proper divisors (7136960).

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

3879040 is a wasteful number, since it uses less digits than its factorization.

3879040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 3879040 is about 1969.5278622045. The cubic root of 3879040 is about 157.1235993717.

The spelling of 3879040 in words is "three million, eight hundred seventy-nine thousand, forty".