2779258 has 4 divisors (see below), whose sum is σ = 4168890. Its totient is φ = 1389628.

The previous prime is 2779253. The next prime is 2779261. The reversal of 2779258 is 8529772.

2779258 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2765569 + 13689 = 1663^2 + 117^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2779258.

It is not an unprimeable number, because it can be changed into a prime (2779253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694813 + ... + 694816.

2^2779258 is an apocalyptic number.

2779258 is a deficient number, since it is larger than the sum of its proper divisors (1389632).

2779258 is a wasteful number, since it uses less digits than its factorization.

2779258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389631.

The product of its digits is 70560, while the sum is 40.

The square root of 2779258 is about 1667.1106741905. The cubic root of 2779258 is about 140.5970758052.

The spelling of 2779258 in words is "two million, seven hundred seventy-nine thousand, two hundred fifty-eight".