2679739 has 4 divisors (see below), whose sum is σ = 2690424. Its totient is φ = 2669056.

The previous prime is 2679737. The next prime is 2679749. The reversal of 2679739 is 9379762.

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 2679739 - 2¹ = 2679737 is a prime.

It is a super-2 number, since 2×2679739² = 14362002216242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2679695 and 2679704.

It is not an unprimeable number, because it can be changed into a prime (2679731) 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, 4957 + ... + 5470.

It is an arithmetic number, because the mean of its divisors is an integer number (672606).

2^2679739 is an apocalyptic number.

2679739 is a deficient number, since it is larger than the sum of its proper divisors (10685).

2679739 is a wasteful number, since it uses less digits than its factorization.

2679739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10684.

The product of its digits is 142884, while the sum is 43.

The square root of 2679739 is about 1636.9908368711. The cubic root of 2679739 is about 138.8984818500.

The spelling of 2679739 in words is "two million, six hundred seventy-nine thousand, seven hundred thirty-nine".