6379909 has 2 divisors, whose sum is σ = 6379910. Its totient is φ = 6379908.

The previous prime is 6379897. The next prime is 6379927. The reversal of 6379909 is 9099736.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4120900 + 2259009 = 2030^2 + 1503^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6379909 is a prime.

It is a d-powerful number, because it can be written as 6³ + 3¹⁴ + 7⁴ + 9⁶ + 9⁶ + 0 + 9⁶ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6379999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3189954 + 3189955.

It is an arithmetic number, because the mean of its divisors is an integer number (3189955).

Almost surely, 2^6379909 is an apocalyptic number.

It is an amenable number.

6379909 is a deficient number, since it is larger than the sum of its proper divisors (1).

6379909 is an equidigital number, since it uses as much as digits as its factorization.

6379909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 43.

The square root of 6379909 is about 2525.8481743763. The cubic root of 6379909 is about 185.4690701913.

The spelling of 6379909 in words is "six million, three hundred seventy-nine thousand, nine hundred nine".