3921413 has 2 divisors, whose sum is σ = 3921414. Its totient is φ = 3921412.

The previous prime is 3921383. The next prime is 3921451. The reversal of 3921413 is 3141293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3378244 + 543169 = 1838^2 + 737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3921413 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3921913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960706 + 1960707.

It is an arithmetic number, because the mean of its divisors is an integer number (1960707).

Almost surely, 2^3921413 is an apocalyptic number.

It is an amenable number.

3921413 is a deficient number, since it is larger than the sum of its proper divisors (1).

3921413 is an equidigital number, since it uses as much as digits as its factorization.

3921413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 3921413 is about 1980.2557915583. The cubic root of 3921413 is about 157.6936460845.

It can be divided in two parts, 3921 and 413, that added together give a palindrome (4334).

The spelling of 3921413 in words is "three million, nine hundred twenty-one thousand, four hundred thirteen".