6402109 has 8 divisors (see below), whose sum is σ = 7495488. Its totient is φ = 5353440.

The previous prime is 6402091. The next prime is 6402139. The reversal of 6402109 is 9012046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6402109 - 2¹³ = 6393917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6402109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402139) 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 in 7 ways as a sum of consecutive naturals, for example, 10867 + ... + 11440.

It is an arithmetic number, because the mean of its divisors is an integer number (936936).

Almost surely, 2^6402109 is an apocalyptic number.

It is an amenable number.

6402109 is a deficient number, since it is larger than the sum of its proper divisors (1093379).

6402109 is a wasteful number, since it uses less digits than its factorization.

6402109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22355.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 6402109 is about 2530.2389215250. The cubic root of 6402109 is about 185.6839450857.

The spelling of 6402109 in words is "six million, four hundred two thousand, one hundred nine".