6435939 has 8 divisors (see below), whose sum is σ = 8780992. Its totient is φ = 4190760.

The previous prime is 6435917. The next prime is 6435973. The reversal of 6435939 is 9395346.

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

It is not a de Polignac number, because 6435939 - 2⁵ = 6435907 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6435897 and 6435906.

It is not an unprimeable number, because it can be changed into a prime (6435139) 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, 24817 + ... + 25074.

It is an arithmetic number, because the mean of its divisors is an integer number (1097624).

Almost surely, 2^6435939 is an apocalyptic number.

6435939 is a deficient number, since it is larger than the sum of its proper divisors (2345053).

6435939 is a wasteful number, since it uses less digits than its factorization.

6435939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49937.

The product of its digits is 87480, while the sum is 39.

The square root of 6435939 is about 2536.9152528218. The cubic root of 6435939 is about 186.0104341470.

The spelling of 6435939 in words is "six million, four hundred thirty-five thousand, nine hundred thirty-nine".