6390049 has 4 divisors (see below), whose sum is σ = 6438960. Its totient is φ = 6341140.

The previous prime is 6390047. The next prime is 6390053. The reversal of 6390049 is 9400936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6390049 - 2¹ = 6390047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6390049.

It is not an unprimeable number, because it can be changed into a prime (6390047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24259 + ... + 24520.

It is an arithmetic number, because the mean of its divisors is an integer number (1609740).

Almost surely, 2^6390049 is an apocalyptic number.

It is an amenable number.

6390049 is a deficient number, since it is larger than the sum of its proper divisors (48911).

6390049 is a wasteful number, since it uses less digits than its factorization.

6390049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48910.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 6390049 is about 2527.8546239845. The cubic root of 6390049 is about 185.5672774908.

The spelling of 6390049 in words is "six million, three hundred ninety thousand, forty-nine".