3961641 has 8 divisors (see below), whose sum is σ = 5300320. Its totient is φ = 2632032.

The previous prime is 3961631. The next prime is 3961649. The reversal of 3961641 is 1461693.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3961641 - 2⁵ = 3961609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3961599 and 3961608.

It is not an unprimeable number, because it can be changed into a prime (3961649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (662540).

Almost surely, 2^3961641 is an apocalyptic number.

It is an amenable number.

3961641 is a deficient number, since it is larger than the sum of its proper divisors (1338679).

3961641 is a wasteful number, since it uses less digits than its factorization.

3961641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4535.

The product of its digits is 3888, while the sum is 30.

The square root of 3961641 is about 1990.3871482704. The cubic root of 3961641 is about 158.2310484956.

The spelling of 3961641 in words is "three million, nine hundred sixty-one thousand, six hundred forty-one".