5671399 has 4 divisors (see below), whose sum is σ = 5803336. Its totient is φ = 5539464.

The previous prime is 5671381. The next prime is 5671403. The reversal of 5671399 is 9931765.

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 5671399 - 2⁹ = 5670887 is a prime.

It is a Duffinian number.

5671399 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5671199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65904 + ... + 65989.

It is an arithmetic number, because the mean of its divisors is an integer number (1450834).

Almost surely, 2^5671399 is an apocalyptic number.

5671399 is a deficient number, since it is larger than the sum of its proper divisors (131937).

5671399 is a wasteful number, since it uses less digits than its factorization.

5671399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131936.

The product of its digits is 51030, while the sum is 40.

The square root of 5671399 is about 2381.4699242275. The cubic root of 5671399 is about 178.3323232442.

The spelling of 5671399 in words is "five million, six hundred seventy-one thousand, three hundred ninety-nine".