6399495 has 12 divisors (see below), whose sum is σ = 11092536. Its totient is φ = 3413040.

The previous prime is 6399467. The next prime is 6399509. The reversal of 6399495 is 5949936.

It is a happy number.

6399495 is a `hidden beast` number, since 639 + 9 + 4 + 9 + 5 = 666.

It is not a de Polignac number, because 6399495 - 2⁹ = 6398983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 142211 = 6399495 / (6 + 3 + 9 + 9 + 4 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 6399495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71061 + ... + 71150.

It is an arithmetic number, because the mean of its divisors is an integer number (924378).

Almost surely, 2^6399495 is an apocalyptic number.

6399495 is a deficient number, since it is larger than the sum of its proper divisors (4693041).

6399495 is a wasteful number, since it uses less digits than its factorization.

6399495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142222 (or 142219 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 6399495 is about 2529.7223167771. The cubic root of 6399495 is about 185.6586698778.

The spelling of 6399495 in words is "six million, three hundred ninety-nine thousand, four hundred ninety-five".