6442929 has 8 divisors (see below), whose sum is σ = 9545120. Its totient is φ = 4295268.

The previous prime is 6442897. The next prime is 6442937. The reversal of 6442929 is 9292446.

6442929 is a `hidden beast` number, since 644 + 2 + 9 + 2 + 9 = 666.

6442929 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6442929 - 2⁵ = 6442897 is a prime.

It is a super-2 number, since 2×6442929² = 83022668198082, which contains 22 as substring.

It is a Duffinian number.

6442929 is a lucky number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 6442893 and 6442902.

It is not an unprimeable number, because it can be changed into a prime (6442939) 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, 119287 + ... + 119340.

It is an arithmetic number, because the mean of its divisors is an integer number (1193140).

Almost surely, 2^6442929 is an apocalyptic number.

It is an amenable number.

6442929 is a deficient number, since it is larger than the sum of its proper divisors (3102191).

6442929 is a wasteful number, since it uses less digits than its factorization.

6442929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238636 (or 238630 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 6442929 is about 2538.2925363322. The cubic root of 6442929 is about 186.0777510530.

The spelling of 6442929 in words is "six million, four hundred forty-two thousand, nine hundred twenty-nine".