2749979 has 8 divisors (see below), whose sum is σ = 2906112. Its totient is φ = 2598120.

The previous prime is 2749921. The next prime is 2749991. The reversal of 2749979 is 9799472.

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

It is a cyclic number.

It is not a de Polignac number, because 2749979 - 2⁸ = 2749723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2749919) 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 7 ways as a sum of consecutive naturals, for example, 302 + ... + 2364.

It is an arithmetic number, because the mean of its divisors is an integer number (363264).

2^2749979 is an apocalyptic number.

2749979 is a deficient number, since it is larger than the sum of its proper divisors (156133).

2749979 is a wasteful number, since it uses less digits than its factorization.

2749979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137.

The product of its digits is 285768, while the sum is 47.

The square root of 2749979 is about 1658.3060634274. The cubic root of 2749979 is about 140.1016099087.

The spelling of 2749979 in words is "two million, seven hundred forty-nine thousand, nine hundred seventy-nine".