6390955 has 4 divisors (see below), whose sum is σ = 7669152. Its totient is φ = 5112760.

The previous prime is 6390953. The next prime is 6390971. The reversal of 6390955 is 5590936.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6390955 - 2¹ = 6390953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6390953) 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, 639091 + ... + 639100.

It is an arithmetic number, because the mean of its divisors is an integer number (1917288).

Almost surely, 2^6390955 is an apocalyptic number.

6390955 is a deficient number, since it is larger than the sum of its proper divisors (1278197).

6390955 is a wasteful number, since it uses less digits than its factorization.

6390955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278196.

The product of its (nonzero) digits is 36450, while the sum is 37.

The square root of 6390955 is about 2528.0338209763. The cubic root of 6390955 is about 185.5760471684.

The spelling of 6390955 in words is "six million, three hundred ninety thousand, nine hundred fifty-five".