3911121 has 12 divisors (see below), whose sum is σ = 5727748. Its totient is φ = 2571264.

The previous prime is 3911111. The next prime is 3911123. The reversal of 3911121 is 1211193.

It can be written as a sum of positive squares in 2 ways, for example, as 810000 + 3101121 = 900^2 + 1761^2 .

It is not a de Polignac number, because 3911121 - 2⁶ = 3911057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3911094 and 3911103.

It is not an unprimeable number, because it can be changed into a prime (3911123) 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, 2320 + ... + 3633.

Almost surely, 2^3911121 is an apocalyptic number.

It is an amenable number.

3911121 is a deficient number, since it is larger than the sum of its proper divisors (1816627).

3911121 is a wasteful number, since it uses less digits than its factorization.

3911121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6032 (or 6029 counting only the distinct ones).

The product of its digits is 54, while the sum is 18.

The square root of 3911121 is about 1977.6554300484. The cubic root of 3911121 is about 157.5555661838. Note that the first 4 decimals are identical.

The spelling of 3911121 in words is "three million, nine hundred eleven thousand, one hundred twenty-one".