3961878 has 16 divisors (see below), whose sum is σ = 7974336. Its totient is φ = 1312200.

The previous prime is 3961877. The next prime is 3961883. The reversal of 3961878 is 8781693.

3961878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 11.

It is a zygodrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1048 + ... + 3003.

It is an arithmetic number, because the mean of its divisors is an integer number (498396).

Almost surely, 2^3961878 is an apocalyptic number.

3961878 is an abundant number, since it is smaller than the sum of its proper divisors (4012458).

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

3961878 is a wasteful number, since it uses less digits than its factorization.

3961878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219.

The product of its digits is 72576, while the sum is 42.

The square root of 3961878 is about 1990.4466835361. The cubic root of 3961878 is about 158.2342037546.

The spelling of 3961878 in words is "three million, nine hundred sixty-one thousand, eight hundred seventy-eight".