3964878 has 48 divisors (see below), whose sum is σ = 9169056. Its totient is φ = 1235520.

The previous prime is 3964871. The next prime is 3964879. The reversal of 3964878 is 8784693.

It is a happy number.

It is an Ulam number.

3964878 is an undulating number in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25176 + ... + 25332.

It is an arithmetic number, because the mean of its divisors is an integer number (191022).

Almost surely, 2^3964878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3964878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4584528).

3964878 is an abundant number, since it is smaller than the sum of its proper divisors (5204178).

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

3964878 is a wasteful number, since it uses less digits than its factorization.

3964878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 246 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 3964878 is about 1991.2001406187. The cubic root of 3964878 is about 158.2741328694.

It can be divided in two parts, 396487 and 8, that added together give a triangular number (396495 = T₈₉₀).

The spelling of 3964878 in words is "three million, nine hundred sixty-four thousand, eight hundred seventy-eight".