6369949 has 2 divisors, whose sum is σ = 6369950. Its totient is φ = 6369948.

The previous prime is 6369947. The next prime is 6369967. The reversal of 6369949 is 9499636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5405625 + 964324 = 2325^2 + 982^2 .

It is a cyclic number.

It is not a de Polignac number, because 6369949 - 2¹ = 6369947 is a prime.

Together with 6369947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 6369899 and 6369908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6369947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3184974 + 3184975.

It is an arithmetic number, because the mean of its divisors is an integer number (3184975).

Almost surely, 2^6369949 is an apocalyptic number.

It is an amenable number.

6369949 is a deficient number, since it is larger than the sum of its proper divisors (1).

6369949 is an equidigital number, since it uses as much as digits as its factorization.

6369949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 46.

The square root of 6369949 is about 2523.8757893367. The cubic root of 6369949 is about 185.3725048608.

It can be divided in two parts, 63699 and 49, that multiplied together give a triangular number (3121251 = T₂₄₉₈).

The spelling of 6369949 in words is "six million, three hundred sixty-nine thousand, nine hundred forty-nine".