3891413 has 4 divisors (see below), whose sum is σ = 3899148. Its totient is φ = 3883680.

The previous prime is 3891403. The next prime is 3891431. The reversal of 3891413 is 3141983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3141983 = 13 ⋅241691.

It can be written as a sum of positive squares in 2 ways, for example, as 786769 + 3104644 = 887^2 + 1762^2 .

It is a cyclic number.

It is not a de Polignac number, because 3891413 - 2⁸ = 3891157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891403) 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, 3056 + ... + 4137.

It is an arithmetic number, because the mean of its divisors is an integer number (974787).

Almost surely, 2^3891413 is an apocalyptic number.

It is an amenable number.

3891413 is a deficient number, since it is larger than the sum of its proper divisors (7735).

3891413 is an equidigital number, since it uses as much as digits as its factorization.

3891413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7734.

The product of its digits is 2592, while the sum is 29.

The square root of 3891413 is about 1972.6664695280. Note that the first 3 decimals coincide. The cubic root of 3891413 is about 157.2904814631.

The spelling of 3891413 in words is "three million, eight hundred ninety-one thousand, four hundred thirteen".