2456839 has 8 divisors (see below), whose sum is σ = 3063168. Its totient is φ = 1914360.

The previous prime is 2456807. The next prime is 2456849. The reversal of 2456839 is 9386542.

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

It is not a de Polignac number, because 2456839 - 2⁵ = 2456807 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 4⁵ + 5⁷ + 6⁷ + 8³ + 3⁴ + 9 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2456798 and 2456807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2456849) 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, 15877 + ... + 16030.

It is an arithmetic number, because the mean of its divisors is an integer number (382896).

2^2456839 is an apocalyptic number.

2456839 is a deficient number, since it is larger than the sum of its proper divisors (606329).

2456839 is a wasteful number, since it uses less digits than its factorization.

2456839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31925.

The product of its digits is 51840, while the sum is 37.

The square root of 2456839 is about 1567.4307002225. The cubic root of 2456839 is about 134.9352959248.

The spelling of 2456839 in words is "two million, four hundred fifty-six thousand, eight hundred thirty-nine".