8425839 has 8 divisors (see below), whose sum is σ = 11250432. Its totient is φ = 5609240.

The previous prime is 8425811. The next prime is 8425841. The reversal of 8425839 is 9385248.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8425839 - 2⁹ = 8425327 is a prime.

It is a d-powerful number, because it can be written as 8³ + 4² + 2²³ + 5⁵ + 8⁵ + 3⁶ + 9² .

It is a junction number, because it is equal to n+sod(n) for n = 8425797 and 8425806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8425939) 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, 1192 + ... + 4274.

It is an arithmetic number, because the mean of its divisors is an integer number (1406304).

Almost surely, 2^8425839 is an apocalyptic number.

8425839 is a deficient number, since it is larger than the sum of its proper divisors (2824593).

8425839 is a wasteful number, since it uses less digits than its factorization.

8425839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3997.

The product of its digits is 69120, while the sum is 39.

The square root of 8425839 is about 2902.7295774839. The cubic root of 8425839 is about 203.4874918612.

The spelling of 8425839 in words is "eight million, four hundred twenty-five thousand, eight hundred thirty-nine".