6424939 has 4 divisors (see below), whose sum is σ = 6598624. Its totient is φ = 6251256.

The previous prime is 6424937. The next prime is 6424961. The reversal of 6424939 is 9394246.

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 6424939 - 2¹ = 6424937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 173647 = 6424939 / (6 + 4 + 2 + 4 + 9 + 3 + 9).

It is an Ulam number.

It is a d-powerful number, because it can be written as 6⁸ + 4⁶ + 2¹³ + 4¹¹ + 9³ + 3¹² + 9⁴ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6424898 and 6424907.

It is not an unprimeable number, because it can be changed into a prime (6424933) 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, 86787 + ... + 86860.

It is an arithmetic number, because the mean of its divisors is an integer number (1649656).

Almost surely, 2^6424939 is an apocalyptic number.

6424939 is a deficient number, since it is larger than the sum of its proper divisors (173685).

6424939 is a wasteful number, since it uses less digits than its factorization.

6424939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173684.

The product of its digits is 46656, while the sum is 37.

The square root of 6424939 is about 2534.7463383936. The cubic root of 6424939 is about 185.9044003271.

The spelling of 6424939 in words is "six million, four hundred twenty-four thousand, nine hundred thirty-nine".