3871399 has 4 divisors (see below), whose sum is σ = 4424464. Its totient is φ = 3318336.

The previous prime is 3871397. The next prime is 3871423. The reversal of 3871399 is 9931783.

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

It is not a de Polignac number, because 3871399 - 2¹ = 3871397 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 (3871391) 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, 276522 + ... + 276535.

It is an arithmetic number, because the mean of its divisors is an integer number (1106116).

Almost surely, 2^3871399 is an apocalyptic number.

3871399 is a deficient number, since it is larger than the sum of its proper divisors (553065).

3871399 is an equidigital number, since it uses as much as digits as its factorization.

3871399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553064.

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

The square root of 3871399 is about 1967.5871009945. The cubic root of 3871399 is about 157.0203632965.

The spelling of 3871399 in words is "three million, eight hundred seventy-one thousand, three hundred ninety-nine".