6429971 has 4 divisors (see below), whose sum is σ = 6603792. Its totient is φ = 6256152.

The previous prime is 6429953. The next prime is 6429977. The reversal of 6429971 is 1799246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6429971 - 2¹⁸ = 6167827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6429977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86855 + ... + 86928.

It is an arithmetic number, because the mean of its divisors is an integer number (1650948).

Almost surely, 2^6429971 is an apocalyptic number.

6429971 is a deficient number, since it is larger than the sum of its proper divisors (173821).

6429971 is a wasteful number, since it uses less digits than its factorization.

6429971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173820.

The product of its digits is 27216, while the sum is 38.

The square root of 6429971 is about 2535.7387483729. The cubic root of 6429971 is about 185.9529209864.

The spelling of 6429971 in words is "six million, four hundred twenty-nine thousand, nine hundred seventy-one".