2472839 has 4 divisors (see below), whose sum is σ = 2552640. Its totient is φ = 2393040.

The previous prime is 2472823. The next prime is 2472851. The reversal of 2472839 is 9382742.

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 2472839 - 2⁴ = 2472823 is a prime.

It is a super-2 number, since 2×2472839² = 12229865439842, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2472799 and 2472808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2472809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39854 + ... + 39915.

It is an arithmetic number, because the mean of its divisors is an integer number (638160).

2^2472839 is an apocalyptic number.

2472839 is a deficient number, since it is larger than the sum of its proper divisors (79801).

2472839 is an equidigital number, since it uses as much as digits as its factorization.

2472839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79800.

The product of its digits is 24192, while the sum is 35.

The square root of 2472839 is about 1572.5263113856. The cubic root of 2472839 is about 135.2275813797.

Subtracting 2472839 from its reverse (9382742), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 2472839 in words is "two million, four hundred seventy-two thousand, eight hundred thirty-nine".