3961211 has 4 divisors (see below), whose sum is σ = 4089024. Its totient is φ = 3833400.

The previous prime is 3961193. The next prime is 3961213. The reversal of 3961211 is 1121693.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3961211 - 2⁶ = 3961147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3961213) 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, 63860 + ... + 63921.

It is an arithmetic number, because the mean of its divisors is an integer number (1022256).

Almost surely, 2^3961211 is an apocalyptic number.

3961211 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

3961211 is a deficient number, since it is larger than the sum of its proper divisors (127813).

3961211 is a wasteful number, since it uses less digits than its factorization.

3961211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127812.

The product of its digits is 324, while the sum is 23.

The square root of 3961211 is about 1990.2791261529. The cubic root of 3961211 is about 158.2253234427.

The spelling of 3961211 in words is "three million, nine hundred sixty-one thousand, two hundred eleven".