6406189929 has 24 divisors (see below), whose sum is σ = 10076289600. Its totient is φ = 3906493920.

The previous prime is 6406189921. The next prime is 6406189943. The reversal of 6406189929 is 9299816046.

It is not a de Polignac number, because 6406189929 - 2³ = 6406189921 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6406189921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 640957 + ... + 650874.

It is an arithmetic number, because the mean of its divisors is an integer number (419845400).

Almost surely, 2^6406189929 is an apocalyptic number.

It is an amenable number.

6406189929 is a deficient number, since it is larger than the sum of its proper divisors (3670099671).

6406189929 is a wasteful number, since it uses less digits than its factorization.

6406189929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291885 (or 1291882 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 6406189929 is about 80038.6777064689. The cubic root of 6406189929 is about 1857.2339052705.

The spelling of 6406189929 in words is "six billion, four hundred six million, one hundred eighty-nine thousand, nine hundred twenty-nine".