3911860 has 12 divisors (see below), whose sum is σ = 8214948. Its totient is φ = 1564736.

The previous prime is 3911849. The next prime is 3911861. The reversal of 3911860 is 681193.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2598544 + 1313316 = 1612^2 + 1146^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3911861) 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, 97777 + ... + 97816.

It is an arithmetic number, because the mean of its divisors is an integer number (684579).

Almost surely, 2^3911860 is an apocalyptic number.

It is an amenable number.

3911860 is an abundant number, since it is smaller than the sum of its proper divisors (4303088).

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

3911860 is a wasteful number, since it uses less digits than its factorization.

3911860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195602 (or 195600 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 3911860 is about 1977.8422586243. The cubic root of 3911860 is about 157.5654888488.

The spelling of 3911860 in words is "three million, nine hundred eleven thousand, eight hundred sixty".