6389949 has 4 divisors (see below), whose sum is σ = 8519936. Its totient is φ = 4259964.

The previous prime is 6389941. The next prime is 6389953. The reversal of 6389949 is 9499836.

It is a happy number.

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 not a de Polignac number, because 6389949 - 2³ = 6389941 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6389898 and 6389907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389941) 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, 1064989 + ... + 1064994.

It is an arithmetic number, because the mean of its divisors is an integer number (2129984).

Almost surely, 2^6389949 is an apocalyptic number.

It is an amenable number.

6389949 is a deficient number, since it is larger than the sum of its proper divisors (2129987).

6389949 is a wasteful number, since it uses less digits than its factorization.

6389949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2129986.

The product of its digits is 419904, while the sum is 48.

The square root of 6389949 is about 2527.8348442887. The cubic root of 6389949 is about 185.5663094844.

The spelling of 6389949 in words is "six million, three hundred eighty-nine thousand, nine hundred forty-nine".