3891379 has 2 divisors, whose sum is σ = 3891380. Its totient is φ = 3891378.

The previous prime is 3891359. The next prime is 3891383. The reversal of 3891379 is 9731983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3891379 - 2¹¹ = 3889331 is a prime.

It is not a weakly prime, because it can be changed into another prime (3891359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1945689 + 1945690.

It is an arithmetic number, because the mean of its divisors is an integer number (1945690).

Almost surely, 2^3891379 is an apocalyptic number.

3891379 is a deficient number, since it is larger than the sum of its proper divisors (1).

3891379 is an equidigital number, since it uses as much as digits as its factorization.

3891379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 40.

The square root of 3891379 is about 1972.6578517320. The cubic root of 3891379 is about 157.2900233697.

The spelling of 3891379 in words is "three million, eight hundred ninety-one thousand, three hundred seventy-nine".