3961111 has 12 divisors (see below), whose sum is σ = 5027400. Its totient is φ = 3086160.

The previous prime is 3961057. The next prime is 3961121. The reversal of 3961111 is 1111693.

It is a happy number.

It is not a de Polignac number, because 3961111 - 2⁹ = 3960599 is a prime.

It is an Ulam number.

3961111 is a modest number, since divided by 1111 gives 396 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3136 + ... + 4213.

It is an arithmetic number, because the mean of its divisors is an integer number (418950).

Almost surely, 2^3961111 is an apocalyptic number.

3961111 is a deficient number, since it is larger than the sum of its proper divisors (1066289).

3961111 is a wasteful number, since it uses less digits than its factorization.

3961111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7374 (or 7367 counting only the distinct ones).

The product of its digits is 162, while the sum is 22.

The square root of 3961111 is about 1990.2540038900. The cubic root of 3961111 is about 158.2239919757.

The spelling of 3961111 in words is "three million, nine hundred sixty-one thousand, one hundred eleven".