6400929 has 8 divisors (see below), whose sum is σ = 8983840. Its totient is φ = 4042656.

The previous prime is 6400921. The next prime is 6400939. The reversal of 6400929 is 9290046.

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

It is not a de Polignac number, because 6400929 - 2³ = 6400921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6400896 and 6400905.

It is not an unprimeable number, because it can be changed into a prime (6400921) 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, 56092 + ... + 56205.

It is an arithmetic number, because the mean of its divisors is an integer number (1122980).

Almost surely, 2^6400929 is an apocalyptic number.

It is an amenable number.

6400929 is a deficient number, since it is larger than the sum of its proper divisors (2582911).

6400929 is a wasteful number, since it uses less digits than its factorization.

6400929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112319.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 6400929 is about 2530.0057312188. The cubic root of 6400929 is about 185.6725363183.

The spelling of 6400929 in words is "six million, four hundred thousand, nine hundred twenty-nine".