2680439 has 4 divisors (see below), whose sum is σ = 2707080. Its totient is φ = 2653800.

The previous prime is 2680427. The next prime is 2680451. The reversal of 2680439 is 9340862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9340862 = 2 ⋅4670431.

It is an interprime number because it is at equal distance from previous prime (2680427) and next prime (2680451).

It is a cyclic number.

It is not a de Polignac number, because 2680439 - 2¹² = 2676343 is a prime.

It is a super-3 number, since 3×2680439³ = 57774878311084333557, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2680409) 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, 13169 + ... + 13370.

It is an arithmetic number, because the mean of its divisors is an integer number (676770).

2^2680439 is an apocalyptic number.

2680439 is a deficient number, since it is larger than the sum of its proper divisors (26641).

2680439 is a wasteful number, since it uses less digits than its factorization.

2680439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26640.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 2680439 is about 1637.2046298493. The cubic root of 2680439 is about 138.9105751263.

The spelling of 2680439 in words is "two million, six hundred eighty thousand, four hundred thirty-nine".