3961404 has 18 divisors (see below), whose sum is σ = 10013640. Its totient is φ = 1320456.

The previous prime is 3961393. The next prime is 3961411. The reversal of 3961404 is 4041693.

It is a tau number, because it is divible by the number of its divisors (18).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54984 + ... + 55055.

Almost surely, 2^3961404 is an apocalyptic number.

It is an amenable number.

3961404 is an abundant number, since it is smaller than the sum of its proper divisors (6052236).

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

3961404 is a wasteful number, since it uses less digits than its factorization.

3961404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110049 (or 110044 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 3961404 is about 1990.3276112238. The cubic root of 3961404 is about 158.2278931107.

The spelling of 3961404 in words is "three million, nine hundred sixty-one thousand, four hundred four".