2739979 has 4 divisors (see below), whose sum is σ = 2989080. Its totient is φ = 2490880.

The previous prime is 2739977. The next prime is 2739983. The reversal of 2739979 is 9799372.

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 2739979 - 2¹ = 2739977 is a prime.

It is a Duffinian number.

2739979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2739973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124534 + ... + 124555.

It is an arithmetic number, because the mean of its divisors is an integer number (747270).

2^2739979 is an apocalyptic number.

2739979 is a deficient number, since it is larger than the sum of its proper divisors (249101).

2739979 is a wasteful number, since it uses less digits than its factorization.

2739979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249100.

The product of its digits is 214326, while the sum is 46.

The square root of 2739979 is about 1655.2881924306. The cubic root of 2739979 is about 139.9315822160.

The spelling of 2739979 in words is "two million, seven hundred thirty-nine thousand, nine hundred seventy-nine".