6397447929 has 8 divisors (see below), whose sum is σ = 8646779232. Its totient is φ = 4206540960.

The previous prime is 6397447921. The next prime is 6397447957. The reversal of 6397447929 is 9297447936.

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

It is not a de Polignac number, because 6397447929 - 2³ = 6397447921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6397447921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14605827 + ... + 14606264.

It is an arithmetic number, because the mean of its divisors is an integer number (1080847404).

Almost surely, 2^6397447929 is an apocalyptic number.

It is an amenable number.

6397447929 is a deficient number, since it is larger than the sum of its proper divisors (2249331303).

6397447929 is a wasteful number, since it uses less digits than its factorization.

6397447929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29212167.

The product of its digits is 20575296, while the sum is 60.

The square root of 6397447929 is about 79984.0479658288. The cubic root of 6397447929 is about 1856.3887159631.

The spelling of 6397447929 in words is "six billion, three hundred ninety-seven million, four hundred forty-seven thousand, nine hundred twenty-nine".